CVE-2026-59828

{"id": "CVE-2026-59828", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59828", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-10T14:17:36.503953Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "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": "2026-07-09T22:17:09.973", "references": [{"url": "https://github.com/discourse/discourse/commit/1f26c1163ce87a2abbd1d01780ab1b5fb16e75f6", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/8b773332b0f937dfcd894ed56d56fc5a81578d9d", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/8d36da1b68c906592abde3f2e94d505cdf097435", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/d58988d46bb1019bfa8b8330ae81a1a134e08511", "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-q456-4f8q-42vx", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-200"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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, post revisions that should be hidden from regular users could be leaked through visible diffs on adjacent revisions serialized by PostRevisionSerializer. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5."}], "lastModified": "2026-07-13T15:22:59.070", "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"}