{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59828", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-07T15:00:50.979Z", "datePublished": "2026-07-09T22:04:50.777Z", "dateUpdated": "2026-07-09T22:04:50.777Z"}, "containers": {"cna": {"title": "Discourse: Hidden post revisions leak through adjacent visible diffs", "problemTypes": [{"descriptions": [{"cweId": "CWE-200", "lang": "en", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/discourse/discourse/security/advisories/GHSA-q456-4f8q-42vx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-q456-4f8q-42vx"}, {"name": "https://github.com/discourse/discourse/commit/1f26c1163ce87a2abbd1d01780ab1b5fb16e75f6", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/1f26c1163ce87a2abbd1d01780ab1b5fb16e75f6"}, {"name": "https://github.com/discourse/discourse/commit/8b773332b0f937dfcd894ed56d56fc5a81578d9d", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/8b773332b0f937dfcd894ed56d56fc5a81578d9d"}, {"name": "https://github.com/discourse/discourse/commit/8d36da1b68c906592abde3f2e94d505cdf097435", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/8d36da1b68c906592abde3f2e94d505cdf097435"}, {"name": "https://github.com/discourse/discourse/commit/d58988d46bb1019bfa8b8330ae81a1a134e08511", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/d58988d46bb1019bfa8b8330ae81a1a134e08511"}, {"name": "https://github.com/discourse/discourse/releases/tag/v2026.1.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/releases/tag/v2026.1.5"}, {"name": "https://github.com/discourse/discourse/releases/tag/v2026.4.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/releases/tag/v2026.4.2"}, {"name": "https://github.com/discourse/discourse/releases/tag/v2026.5.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/releases/tag/v2026.5.1"}, {"name": "https://github.com/discourse/discourse/releases/tag/v2026.6.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/releases/tag/v2026.6.0"}], "affected": [{"vendor": "discourse", "product": "discourse", "versions": [{"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", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-09T22:04:50.777Z"}, "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."}], "source": {"advisory": "GHSA-q456-4f8q-42vx", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2026.1.0-latest,2026.1.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2026.4.0-latest,2026.4.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2026.5.0-latest,2026.5.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "discourse", "source": "cna", "vendor": "discourse"}, "product": "discourse", "vendor": "discourse"}], "created": "2026-07-09T23:45:03.809332+00:00", "updated": "2026-07-09T23:45:03.809360+00:00", "vendors": ["discourse", "discourse$PRODUCT$discourse"]}