CVE-2026-53962

{"id": "CVE-2026-53962", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53962", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-10T19:13:14.855663Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.3}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "discourse", "product": "discourse", "versions": [{"status": "affected", "version": ">= 2026.1.0-latest, < 2026.1.5"}, {"status": "affected", "version": ">= 2026.4.0-latest, < 2026.4.2"}, {"status": "affected", "version": ">= 2026.5.0-latest, < 2026.5.1"}]}]}], "published": "2026-07-09T22:17:05.600", "references": [{"url": "https://github.com/discourse/discourse/commit/3ee8343cd7f00d59d8513bee0a12e02d50bfc358", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/810c2715799fd08b06fd6ffc664d9562fe9ea6ff", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/92a699d89b84685b6fdd63cd0d0e371793c69dad", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/b8ceb49f4ba52257be30eb3c2ce51a5bf03be5fe", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/releases/tag/v2026.1.5", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/releases/tag/v2026.4.2", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/releases/tag/v2026.5.1", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/releases/tag/v2026.6.0", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/security/advisories/GHSA-jmcf-3367-78vv", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, insufficient SVG sanitization in upload and user avatar handling could lead to cross-site scripting when a user visited specific URLs that are not normally part of community browsing. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5."}], "lastModified": "2026-07-14T01:35:33.597", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E41661D7-5D61-44CF-BFEA-57C53057A46F", "versionEndExcluding": "2026.1.5", "versionStartIncluding": "2026.1.0"}, {"criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E594AEEC-13D5-48EE-AE07-0C3C25FBBC72", "versionEndExcluding": "2026.4.2", "versionStartIncluding": "2026.4.0"}, {"criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CD722A52-B00A-4548-92CA-807CEB0449B0", "versionEndExcluding": "2026.5.1", "versionStartIncluding": "2026.5.0"}, {"criteria": "cpe:2.3:a:discourse:discourse:2026.6.0:*:*:*:latest:*:*:*", "vulnerable": true, "matchCriteriaId": "F2E7E180-2D99-484E-80A8-12F706ABDE65"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}