126 lines
5.2 KiB
JSON
126 lines
5.2 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-2026-55674",
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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": "2026-06-17T00:05:03.778Z",
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"datePublished": "2026-08-17T15:30:17.691Z",
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"dateUpdated": "2026-08-18T14:43:21.430Z"
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},
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"containers": {
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"cna": {
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"title": "Discourse: Cache poisoning/XSS via color scheme cookies",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-79",
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"lang": "en",
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"description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
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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": 9.3,
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"baseSeverity": "CRITICAL",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "CHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/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-qx4v-rg4v-pm2g",
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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-qx4v-rg4v-pm2g"
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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": "< 2026.1.6",
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"status": "affected"
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},
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{
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"version": ">= 2026.5.0-latest, < 2026.5.2",
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"status": "affected"
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},
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{
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"version": ">= 2026.6.0-latest, < 2026.6.1",
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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": "2026-08-17T15:30:17.691Z"
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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 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, an unauthenticated attacker could send a single request with a crafted color_scheme_id (or dark_scheme_id) cookie to inject arbitrary HTML into a Discourse page. Because the cookie value was rendered into a color scheme tag without escaping, the attacker could break out of the attribute and inject a tag that bypassed Discourse's nonce-based Content Security Policy, resulting in arbitrary JavaScript execution in visitors' browsers. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0."
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}
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],
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"source": {
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"advisory": "GHSA-qx4v-rg4v-pm2g",
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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": "2026-08-18T14:42:55.146337Z",
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"id": "CVE-2026-55674",
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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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"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": "2026-08-18T14:43:21.430Z"
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}
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}
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]
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}
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} |