{"id":"CVE-2023-32678","state":"PUBLISHED","title":"Zulip vulnerable to insufficient authorization check for edition/deletion of messages and topics in private streams by former subscribers","description":"Zulip is an open-source team collaboration tool with topic-based threading that combines email and chat. Users who used to be subscribed to a private stream and have been removed from it since retain the ability to edit messages/topics, move messages to other streams, and delete messages that they used to have access to, if other relevant organization permissions allow these actions. For example, a user may be able to edit or delete their old messages they posted in such a private stream. An administrator will be able to delete old messages (that they had access to) from the private stream. This issue was fixed in Zulip Server version 7.3.","publishedAt":"2023-08-25T20:04:49.432Z","updatedAt":"2024-09-30T18:17:38.788Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["zulip zulip"],"affected":[{"vendor":"zulip","product":"zulip","versions":[{"version":"< 7.3","status":"affected"}]}],"references":["https://github.com/zulip/zulip/security/advisories/GHSA-q3wg-jm9p-35fj","https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-7-3"],"weaknesses":["CWE-285"],"ingestedAt":"2026-10-29T20:06:00.499Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/32xxx/CVE-2023-32678.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-32678","state":"PUBLISHED","datePublished":"2023-08-25T20:04:49.432Z","dateUpdated":"2024-09-30T18:17:38.788Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2023-05-11T16:33:45.731Z"},"containers":{"cna":{"title":"Zulip vulnerable to insufficient authorization check for edition/deletion of messages and topics in private streams by former subscribers","descriptions":[{"lang":"en","value":"Zulip is an open-source team collaboration tool with topic-based threading that combines email and chat. Users who used to be subscribed to a private stream and have been removed from it since retain the ability to edit messages/topics, move messages to other streams, and delete messages that they used to have access to, if other relevant organization permissions allow these actions. For example, a user may be able to edit or delete their old messages they posted in such a private stream. An administrator will be able to delete old messages (that they had access to) from the private stream. This issue was fixed in Zulip Server version 7.3."}],"affected":[{"vendor":"zulip","product":"zulip","versions":[{"version":"< 7.3","status":"affected"}]}],"references":[{"url":"https://github.com/zulip/zulip/security/advisories/GHSA-q3wg-jm9p-35fj","name":"https://github.com/zulip/zulip/security/advisories/GHSA-q3wg-jm9p-35fj","tags":["x_refsource_CONFIRM"]},{"url":"https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-7-3","name":"https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-7-3","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-285","lang":"en","description":"CWE-285: Improper Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2023-08-25T20:04:49.432Z"},"source":{"advisory":"GHSA-q3wg-jm9p-35fj","discovery":"UNKNOWN"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/zulip/zulip/security/advisories/GHSA-q3wg-jm9p-35fj","name":"https://github.com/zulip/zulip/security/advisories/GHSA-q3wg-jm9p-35fj","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-7-3","name":"https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-7-3","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T15:25:36.357Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-09-30T18:17:12.677442Z","id":"CVE-2023-32678","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-30T18:17:38.788Z"}}]}}}