{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45780", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-13T07:45:21.252Z", "datePublished": "2026-07-09T22:08:52.125Z", "dateUpdated": "2026-07-09T22:08:52.125Z"}, "containers": {"cna": {"title": "Discourse: Private event sample invitees are serialized to non-invited event viewers", "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-22v7-6wgj-g9f7", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-22v7-6wgj-g9f7"}, {"name": "https://github.com/discourse/discourse/commit/37969503f20369eb1712b7b88daedcfb4f63f5f1", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/37969503f20369eb1712b7b88daedcfb4f63f5f1"}, {"name": "https://github.com/discourse/discourse/commit/4d46638041b5f3d1e1f7f6f6f19c1df3bd65a586", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/4d46638041b5f3d1e1f7f6f6f19c1df3bd65a586"}, {"name": "https://github.com/discourse/discourse/commit/6457ab71f36a2d1440fe96af0a2593897844b023", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/6457ab71f36a2d1440fe96af0a2593897844b023"}, {"name": "https://github.com/discourse/discourse/commit/7deb4b6963442569357b41e61febe37594e5e730", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/7deb4b6963442569357b41e61febe37594e5e730"}, {"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": "2026-07-09T22:08:52.125Z"}, "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, EventSerializer could expose invited group names, sample invitees, and attendance statistics to users who could view the topic but were not entitled to view the private event invitee list. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5."}], "source": {"advisory": "GHSA-22v7-6wgj-g9f7", "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": "2026-07-09T23:30:16.329436+00:00", "updated": "2026-07-09T23:30:16.329457+00:00", "vendors": ["discourse", "discourse$PRODUCT$discourse"]}