{"id":"CVE-2026-40168","state":"PUBLISHED","title":"Postiz has Server-Side Request Forgery via Redirect Bypass in /api/public/stream","description":"Postiz is an AI social media scheduling tool. Prior to 2.21.5, the /api/public/stream endpoint is vulnerable to SSRF. Although the application validates the initially supplied URL and blocks direct private/internal hosts, it does not re-validate the final destination after HTTP redirects. As a result, an attacker can supply a public HTTPS URL that passes validation and then redirects the server-side request to an internal resource.","publishedAt":"2026-04-10T19:20:16.365Z","updatedAt":"2026-04-13T20:55:15.792Z","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:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["gitroomhq postiz-app"],"affected":[{"vendor":"gitroomhq","product":"postiz-app","versions":[{"version":"< 2.21.5","status":"affected"}]}],"references":["https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww","https://github.com/gitroomhq/postiz-app/commit/30e8b777098157362769226d1b46d83ad616cb06","https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.5"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40168.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40168","state":"PUBLISHED","datePublished":"2026-04-10T19:20:16.365Z","dateUpdated":"2026-04-13T20:55:15.792Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-09T19:31:56.014Z"},"containers":{"cna":{"title":"Postiz has Server-Side Request Forgery via Redirect Bypass in /api/public/stream","descriptions":[{"lang":"en","value":"Postiz is an AI social media scheduling tool. Prior to 2.21.5, the /api/public/stream endpoint is vulnerable to SSRF. Although the application validates the initially supplied URL and blocks direct private/internal hosts, it does not re-validate the final destination after HTTP redirects. As a result, an attacker can supply a public HTTPS URL that passes validation and then redirects the server-side request to an internal resource."}],"affected":[{"vendor":"gitroomhq","product":"postiz-app","versions":[{"version":"< 2.21.5","status":"affected"}]}],"references":[{"url":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww","name":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/gitroomhq/postiz-app/commit/30e8b777098157362769226d1b46d83ad616cb06","name":"https://github.com/gitroomhq/postiz-app/commit/30e8b777098157362769226d1b46d83ad616cb06","tags":["x_refsource_MISC"]},{"url":"https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.5","name":"https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.5","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-10T19:20:16.365Z"},"source":{"advisory":"GHSA-34w8-5j2v-h6ww","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-13T20:55:02.053732Z","id":"CVE-2026-40168","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-13T20:55:15.792Z"}}]}}}