128 lines
5.7 KiB
JSON
128 lines
5.7 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-2026-31976",
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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": "2026-03-10T15:40:10.487Z",
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"datePublished": "2026-03-11T19:44:38.643Z",
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"dateUpdated": "2026-03-12T19:54:54.608Z"
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},
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"containers": {
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"cna": {
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"title": "xygeni-action v5 tag poisoned with C2 backdoor",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-506",
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"lang": "en",
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"description": "CWE-506: Embedded Malicious Code",
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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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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 9.3,
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"baseSeverity": "CRITICAL",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0"
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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/xygeni/xygeni-action/security/advisories/GHSA-f8q5-h5qh-33mh",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/xygeni/xygeni-action/security/advisories/GHSA-f8q5-h5qh-33mh"
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},
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{
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"name": "https://github.com/xygeni/xygeni-action/issues/54",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/xygeni/xygeni-action/issues/54"
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}
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],
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"affected": [
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{
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"vendor": "xygeni",
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"product": "xygeni-action",
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"versions": [
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{
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"version": ">= March 3, 2026, <= March 10, 2026",
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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": "2026-03-11T19:44:38.643Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "xygeni-action is the GitHub Action for Xygeni Scanner. On March 3, 2026, an attacker with access to compromised credentials created a series of pull requests (#46, #47, #48) injecting obfuscated shell code into action.yml. The PRs were blocked by branch protection rules and never merged into the main branch. However, the attacker used the compromised GitHub App credentials to move the mutable v5 tag to point at the malicious commit (4bf1d4e19ad81a3e8d4063755ae0f482dd3baf12) from one of the unmerged PRs. This commit remained in the repository's git object store, and any workflow referencing @v5 would fetch and execute it. This is a supply chain compromise via tag poisoning. Any GitHub Actions workflow referencing xygeni/xygeni-action@v5 during the affected window (approximately March 3–10, 2026) executed a C2 implant that granted the attacker arbitrary command execution on the CI runner for up to 180 seconds per workflow run."
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}
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],
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"source": {
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"advisory": "GHSA-f8q5-h5qh-33mh",
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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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"timestamp": "2026-03-12T19:54:48.032219Z",
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"id": "CVE-2026-31976",
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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": "yes"
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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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"role": "CISA Coordinator",
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"version": "2.0.3"
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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": "2026-03-12T19:54:54.608Z"
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}
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}
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]
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}
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} |