{"id":"CVE-2026-74869","state":"PUBLISHED","title":"stoatchat before 0.15.0 Missing Authorization via Subscribe","description":"stoatchat before 0.15.0 contains a missing authorization vulnerability in the Subscribe message handler that allows authenticated attackers to enumerate members and monitor profile updates of private servers without membership. Attackers can subscribe to any server's member-update topic by sending a Subscribe message with an arbitrary server ID, receiving live UserUpdate events including display names, avatars, and status changes for members they should not have access to.","publishedAt":"2026-08-17T11:04:39.522Z","updatedAt":"2026-08-17T16:04:14.984Z","severity":{"score":8.3,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["stoatchat stoatchat"],"affected":[{"vendor":"stoatchat","product":"stoatchat","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.15.0","versionType":"semver"},{"version":"0.15.0","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/stoatchat/stoatchat/security/advisories/GHSA-jj3j-9qr7-jgfc","https://www.vulncheck.com/advisories/stoatchat-before-missing-authorization-via-subscribe"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74869.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74869","state":"PUBLISHED","datePublished":"2026-08-17T11:04:39.522Z","dateUpdated":"2026-08-17T16:04:14.984Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-08-17T10:31:04.592Z"},"containers":{"cna":{"title":"stoatchat before 0.15.0 Missing Authorization via Subscribe","descriptions":[{"lang":"en","value":"stoatchat before 0.15.0 contains a missing authorization vulnerability in the Subscribe message handler that allows authenticated attackers to enumerate members and monitor profile updates of private servers without membership. Attackers can subscribe to any server's member-update topic by sending a Subscribe message with an arbitrary server ID, receiving live UserUpdate events including display names, avatars, and status changes for members they should not have access to."}],"affected":[{"vendor":"stoatchat","product":"stoatchat","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.15.0","versionType":"semver"},{"version":"0.15.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/stoatchat/stoatchat/security/advisories/GHSA-jj3j-9qr7-jgfc","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-jj3j-9qr7-jgfc)"},{"url":"https://www.vulncheck.com/advisories/stoatchat-before-missing-authorization-via-subscribe","name":"VulnCheck Advisory: stoatchat before 0.15.0 Missing Authorization via Subscribe","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.3,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-08-17T11:04:39.522Z"},"datePublic":"2026-08-02T00:00:00.000Z","credits":[{"lang":"en","value":"DonAsako","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-17T15:45:55.517624Z","id":"CVE-2026-74869","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":"2026-08-17T16:04:14.984Z"}}]}}}