{"id":"CVE-2026-44787","state":"PUBLISHED","title":"Discourse: Signup-time primary_group_id assignment grants whisperer access","description":"Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, the signup flow could allow newly registered users to set primary_group_id and gain whisper-group privileges without legitimate group membership on sites with whispers_allowed_groups configured. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.","publishedAt":"2026-07-09T22:03:41.409Z","updatedAt":"2026-07-10T20:59:36.502Z","severity":{"score":8.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["discourse discourse"],"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"}]}],"references":["https://github.com/discourse/discourse/security/advisories/GHSA-vmwq-jvxx-jwfx","https://github.com/discourse/discourse/commit/012796ac28c85b30aa233c5ef042fc66efff8126","https://github.com/discourse/discourse/commit/0f50a07a6ef4b33f3f826ce6d7bf6d7bd16912d8","https://github.com/discourse/discourse/commit/5418e3027dba109e27a4796463686d61e190ac29","https://github.com/discourse/discourse/commit/6fc7e6cf04422fc3f9d1c99134803071e983ff0a","https://github.com/discourse/discourse/releases/tag/v2026.1.5","https://github.com/discourse/discourse/releases/tag/v2026.4.2","https://github.com/discourse/discourse/releases/tag/v2026.5.1","https://github.com/discourse/discourse/releases/tag/v2026.6.0"],"weaknesses":["CWE-269"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44787.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44787","state":"PUBLISHED","datePublished":"2026-07-09T22:03:41.409Z","dateUpdated":"2026-07-10T20:59:36.502Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-07T19:20:44.691Z"},"containers":{"cna":{"title":"Discourse: Signup-time primary_group_id assignment grants whisperer access","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, the signup flow could allow newly registered users to set primary_group_id and gain whisper-group privileges without legitimate group membership on sites with whispers_allowed_groups configured. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5."}],"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"}]}],"references":[{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-vmwq-jvxx-jwfx","name":"https://github.com/discourse/discourse/security/advisories/GHSA-vmwq-jvxx-jwfx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/discourse/discourse/commit/012796ac28c85b30aa233c5ef042fc66efff8126","name":"https://github.com/discourse/discourse/commit/012796ac28c85b30aa233c5ef042fc66efff8126","tags":["x_refsource_MISC"]},{"url":"https://github.com/discourse/discourse/commit/0f50a07a6ef4b33f3f826ce6d7bf6d7bd16912d8","name":"https://github.com/discourse/discourse/commit/0f50a07a6ef4b33f3f826ce6d7bf6d7bd16912d8","tags":["x_refsource_MISC"]},{"url":"https://github.com/discourse/discourse/commit/5418e3027dba109e27a4796463686d61e190ac29","name":"https://github.com/discourse/discourse/commit/5418e3027dba109e27a4796463686d61e190ac29","tags":["x_refsource_MISC"]},{"url":"https://github.com/discourse/discourse/commit/6fc7e6cf04422fc3f9d1c99134803071e983ff0a","name":"https://github.com/discourse/discourse/commit/6fc7e6cf04422fc3f9d1c99134803071e983ff0a","tags":["x_refsource_MISC"]},{"url":"https://github.com/discourse/discourse/releases/tag/v2026.1.5","name":"https://github.com/discourse/discourse/releases/tag/v2026.1.5","tags":["x_refsource_MISC"]},{"url":"https://github.com/discourse/discourse/releases/tag/v2026.4.2","name":"https://github.com/discourse/discourse/releases/tag/v2026.4.2","tags":["x_refsource_MISC"]},{"url":"https://github.com/discourse/discourse/releases/tag/v2026.5.1","name":"https://github.com/discourse/discourse/releases/tag/v2026.5.1","tags":["x_refsource_MISC"]},{"url":"https://github.com/discourse/discourse/releases/tag/v2026.6.0","name":"https://github.com/discourse/discourse/releases/tag/v2026.6.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-269","lang":"en","description":"CWE-269: Improper Privilege Management","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-09T22:03:41.409Z"},"source":{"advisory":"GHSA-vmwq-jvxx-jwfx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-10T20:53:15.561918Z","id":"CVE-2026-44787","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-10T20:59:36.502Z"}}]}}}