300 lines
13 KiB
JSON
300 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-29186",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-03-04T14:44:00.714Z",
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"datePublished": "2026-03-07T15:03:51.422Z",
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"dateUpdated": "2026-07-15T01:10:31.895Z"
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},
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"containers": {
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"cna": {
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"title": "@backstage/plugin-techdocs-node: TechDocs Mkdocs Configuration Key Enables Arbitrary Code Execution",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-434",
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"lang": "en",
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"description": "CWE-434: Unrestricted Upload of File with Dangerous Type",
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"type": "CWE"
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}
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]
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},
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{
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"descriptions": [
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{
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"cweId": "CWE-74",
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"lang": "en",
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"description": "CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"baseScore": 7.7,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "LOW",
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"privilegesRequired": "LOW",
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"scope": "CHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/backstage/backstage/security/advisories/GHSA-928r-fm4v-mvrw",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/backstage/backstage/security/advisories/GHSA-928r-fm4v-mvrw"
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}
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],
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"affected": [
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{
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"vendor": "backstage",
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"product": "backstage",
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"versions": [
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{
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"version": "< 1.14.3",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-03-07T15:03:51.422Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Backstage is an open framework for building developer portals. Prior to version 1.14.3, this is a configuration bypass vulnerability that enables arbitrary code execution. The @backstage/plugin-techdocs-node package uses an allowlist to filter dangerous MkDocs configuration keys during the documentation build process. A gap in this allowlist allows attackers to craft an mkdocs.yml that causes arbitrary Python code execution, completely bypassing TechDocs' security controls. This issue has been patched in version 1.14.3."
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}
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],
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"source": {
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"advisory": "GHSA-928r-fm4v-mvrw",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-29186",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-03-09T20:15:04.131913Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-03-09T20:24:16.895Z"
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}
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},
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{
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"affected": [
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{
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"cpes": [
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"cpe:/a:redhat:rhdh:1.8::el9"
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],
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"defaultStatus": "affected",
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"packageName": "rhdh/rhdh-hub-rhel9",
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"product": "Red Hat Developer Hub 1.8",
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"vendor": "Red Hat",
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"versions": [
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{
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"lessThan": "*",
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"status": "unaffected",
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"version": "1776784286",
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"versionType": "rpm"
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}
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]
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},
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{
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"cpes": [
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"cpe:/a:redhat:rhdh:1.9::el9"
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],
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"defaultStatus": "affected",
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"packageName": "rhdh/rhdh-hub-rhel9",
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"product": "Red Hat Developer Hub 1.9",
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"vendor": "Red Hat",
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"versions": [
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{
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"lessThan": "*",
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"status": "unaffected",
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"version": "1777903262",
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"versionType": "rpm"
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}
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]
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},
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{
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"cpes": [
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"cpe:/a:redhat:ansible_portal:2"
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],
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"defaultStatus": "affected",
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"packageName": "ansible-automation-platform/automation-portal",
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"product": "Self-service automation portal 2",
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"vendor": "Red Hat"
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}
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],
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"datePublic": "2026-03-07T15:03:51.422Z",
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"descriptions": [
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{
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"lang": "en",
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"value": "A flaw was found in Backstage. The backstage/plugin-techdocs-node package uses an allowlist to filter dangerous MkDocs configuration keys during the documentation build process. A gap in this allowlist allows attackers to craft an mkdocs.yml file that causes arbitrary Python code execution."
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}
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],
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"metrics": [
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{
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"other": {
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"content": {
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"namespace": "https://access.redhat.com/security/updates/classification/",
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"value": "Important"
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},
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"type": "Red Hat severity rating"
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}
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},
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"baseScore": 9.1,
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"baseSeverity": "CRITICAL",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "LOW",
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"privilegesRequired": "LOW",
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"scope": "CHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L",
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"version": "3.1"
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},
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"format": "CVSS"
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-791",
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"description": "Incomplete Filtering of Special Elements",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"references": [
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{
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"tags": [
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"vdb-entry",
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"x_refsource_REDHAT"
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],
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"url": "https://access.redhat.com/security/cve/CVE-2026-29186"
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},
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{
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"name": "RHBZ#2445480",
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"tags": [
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"issue-tracking",
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"x_refsource_REDHAT"
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],
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445480"
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},
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{
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"tags": [
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"x_sadp-csaf-vex"
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],
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"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29186.json"
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},
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{
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"tags": [
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"vendor-advisory",
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"x_refsource_REDHAT"
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],
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"url": "https://access.redhat.com/errata/RHSA-2026:9742"
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},
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{
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"tags": [
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"vendor-advisory",
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"x_refsource_REDHAT"
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],
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"url": "https://access.redhat.com/errata/RHSA-2026:13826"
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "RHSA-2026:9742: Red Hat Developer Hub 1.8"
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},
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{
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"lang": "en",
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"value": "RHSA-2026:13826: Red Hat Developer Hub 1.9"
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}
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],
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"timeline": [
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{
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"lang": "en",
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"time": "2026-03-07T16:01:40.949Z",
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"value": "Reported to Red Hat."
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},
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{
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"lang": "en",
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"time": "2026-03-07T15:03:51.422Z",
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"value": "Made public."
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}
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],
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"title": "backstage/plugin-techdocs-node: TechDocs Mkdocs configuration key enables arbitrary code execution",
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"workarounds": [
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{
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"lang": "en",
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"value": "To mitigate this issue, enable docker isolation by updating the Backstage configuration to use 'runIn: docker' instead of 'runIn: local', confining the arbitrary Python code execution to a containerized environment. Additionally, limit commit access to repositories tracked by Backstage to trusted contributors only, and enforce mandatory pull request (PR) reviews for any modifications made to the mkdocs.yml file."
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}
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],
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"x_adpType": "supplier",
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"x_generator": {
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"engine": "sadp-cli 1.0.0"
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},
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"providerMetadata": {
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"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
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"shortName": "redhat-SADP",
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"dateUpdated": "2026-07-15T01:10:31.895Z"
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}
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}
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]
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}
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} |