147 lines
6.2 KiB
JSON
147 lines
6.2 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-2026-33393",
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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": "2026-03-19T17:02:34.169Z",
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"datePublished": "2026-03-19T22:04:26.484Z",
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"dateUpdated": "2026-03-20T20:15:16.294Z"
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},
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"containers": {
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"cna": {
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"title": "Discourse fixes loose hostname matching in spam host allowlist",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-284",
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"lang": "en",
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"description": "CWE-284: Improper Access Control",
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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": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 4.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "LOW",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
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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/discourse/discourse/security/advisories/GHSA-95r5-p6qr-hgw6",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/discourse/discourse/security/advisories/GHSA-95r5-p6qr-hgw6"
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},
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{
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"name": "https://github.com/discourse/discourse/commit/80b19c15fe9c7bc890d1a54f454c8446312ac6d2",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/discourse/discourse/commit/80b19c15fe9c7bc890d1a54f454c8446312ac6d2"
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},
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{
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"name": "https://github.com/discourse/discourse/commit/d8467b9fbb3d9ed6047b4e508d3fef88a37b8a02",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/discourse/discourse/commit/d8467b9fbb3d9ed6047b4e508d3fef88a37b8a02"
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},
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{
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"name": "https://github.com/discourse/discourse/commit/f99099cfbc6b76fe39d6fa2daa48efd69497fb8e",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/discourse/discourse/commit/f99099cfbc6b76fe39d6fa2daa48efd69497fb8e"
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}
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],
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"affected": [
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{
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"vendor": "discourse",
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"product": "discourse",
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"versions": [
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{
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"version": ">= 2026.1.0-latest, < 2026.1.2",
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"status": "affected"
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},
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{
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"version": ">= 2026.2.0-latest, < 2026.2.1",
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"status": "affected"
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},
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{
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"version": "= 2026.3.0-latest",
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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": "2026-03-19T22:04:26.484Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the `allowed_spam_host_domains` check used `String#end_with?` without domain boundary validation, allowing domains like `attacker-example.com` to bypass spam protection when `example.com` was allowlisted. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 require exact match or proper subdomain match (preceded by `.`) to prevent suffix-based bypass of `newuser_spam_host_threshold`. No known workarounds are available."
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}
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],
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"source": {
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"advisory": "GHSA-95r5-p6qr-hgw6",
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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": "2026-03-20T20:15:06.393968Z",
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"id": "CVE-2026-33393",
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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": "partial"
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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": "2026-03-20T20:15:16.294Z"
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}
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}
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]
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}
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} |