{"id":"CVE-2025-47930","state":"PUBLISHED","title":"Zulip Server has access control bypass for restrictions on creation of specific channel types","description":"Zulip is an open-source team chat application. Starting in version 10.0 and prior to version 10.3, the \"Who can create public channels\" access control mechanism can be circumvented by creating a private or web-public channel, and then changing the channel privacy to public. A similar technique works for creating private channels without permission, though such a process requires either the API or modifying the HTML, as we do mark the \"private\" radio button as disabled in such cases. Version 10.3 contains a patch.","publishedAt":"2025-05-15T23:17:29.829Z","updatedAt":"2025-05-16T13:19:46.691Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["zulip zulip"],"affected":[{"vendor":"zulip","product":"zulip","versions":[{"version":">= 10.0, < 10.3","status":"affected"}]}],"references":["https://github.com/zulip/zulip/security/advisories/GHSA-rqg7-xfqg-v7q5","https://github.com/zulip/zulip/commit/d2ff4bda4c3efa30fc3ab1f151255cfdbf370f78","https://zulip.com/help/configure-who-can-create-channels","https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-10-3"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:09:23.771Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/47xxx/CVE-2025-47930.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-47930","state":"PUBLISHED","datePublished":"2025-05-15T23:17:29.829Z","dateUpdated":"2025-05-16T13:19:46.691Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-05-14T10:32:43.529Z"},"containers":{"cna":{"title":"Zulip Server has access control bypass for restrictions on creation of specific channel types","descriptions":[{"lang":"en","value":"Zulip is an open-source team chat application. Starting in version 10.0 and prior to version 10.3, the \"Who can create public channels\" access control mechanism can be circumvented by creating a private or web-public channel, and then changing the channel privacy to public. A similar technique works for creating private channels without permission, though such a process requires either the API or modifying the HTML, as we do mark the \"private\" radio button as disabled in such cases. Version 10.3 contains a patch."}],"affected":[{"vendor":"zulip","product":"zulip","versions":[{"version":">= 10.0, < 10.3","status":"affected"}]}],"references":[{"url":"https://github.com/zulip/zulip/security/advisories/GHSA-rqg7-xfqg-v7q5","name":"https://github.com/zulip/zulip/security/advisories/GHSA-rqg7-xfqg-v7q5","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/zulip/zulip/commit/d2ff4bda4c3efa30fc3ab1f151255cfdbf370f78","name":"https://github.com/zulip/zulip/commit/d2ff4bda4c3efa30fc3ab1f151255cfdbf370f78","tags":["x_refsource_MISC"]},{"url":"https://zulip.com/help/configure-who-can-create-channels","name":"https://zulip.com/help/configure-who-can-create-channels","tags":["x_refsource_MISC"]},{"url":"https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-10-3","name":"https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-10-3","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-05-15T23:17:29.829Z"},"source":{"advisory":"GHSA-rqg7-xfqg-v7q5","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-05-16T13:19:39.957985Z","id":"CVE-2025-47930","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":"2025-05-16T13:19:46.691Z"}}]}}}