{"id":"CVE-2026-55160","state":"PUBLISHED","title":"Authenticated Server-Side Request Forgery (SSRF) via feed URL in Stringer","description":"Stringer is a self-hosted, anti-social RSS reader. Prior to commit 75cb095, an unrestricted Server-Side Request Forgery (SSRF) vulnerability allows any authenticated user to force the Stringer server to send arbitrary HTTP/HTTPS requests to internal networks, localhost services, and cloud metadata endpoints (e.g. AWS IMDS 169.254.169.254). When self-service signup is enabled (Setting::UserSignup), even a low-privileged registered user can exploit this to scan internal services or steal cloud IAM credentials. This issue has been patched via commit 75cb095.","publishedAt":"2026-09-28T17:52:24.490Z","updatedAt":"2026-09-28T18:35:30.003Z","severity":{"score":7.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["stringer-rss stringer"],"affected":[{"vendor":"stringer-rss","product":"stringer","versions":[{"version":"< 75cb0955919a362ac49d23c8a14892d0f59ea1c4","status":"affected"}]}],"references":["https://github.com/stringer-rss/stringer/security/advisories/GHSA-496x-437q-h35q","https://github.com/stringer-rss/stringer/pull/1548","https://github.com/stringer-rss/stringer/commit/75cb0955919a362ac49d23c8a14892d0f59ea1c4"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55160.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55160","state":"PUBLISHED","datePublished":"2026-09-28T17:52:24.490Z","dateUpdated":"2026-09-28T18:35:30.003Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-16T15:13:28.165Z"},"containers":{"cna":{"title":"Authenticated Server-Side Request Forgery (SSRF) via feed URL in Stringer","descriptions":[{"lang":"en","value":"Stringer is a self-hosted, anti-social RSS reader. Prior to commit 75cb095, an unrestricted Server-Side Request Forgery (SSRF) vulnerability allows any authenticated user to force the Stringer server to send arbitrary HTTP/HTTPS requests to internal networks, localhost services, and cloud metadata endpoints (e.g. AWS IMDS 169.254.169.254). When self-service signup is enabled (Setting::UserSignup), even a low-privileged registered user can exploit this to scan internal services or steal cloud IAM credentials. This issue has been patched via commit 75cb095."}],"affected":[{"vendor":"stringer-rss","product":"stringer","versions":[{"version":"< 75cb0955919a362ac49d23c8a14892d0f59ea1c4","status":"affected"}]}],"references":[{"url":"https://github.com/stringer-rss/stringer/security/advisories/GHSA-496x-437q-h35q","name":"https://github.com/stringer-rss/stringer/security/advisories/GHSA-496x-437q-h35q","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/stringer-rss/stringer/pull/1548","name":"https://github.com/stringer-rss/stringer/pull/1548","tags":["x_refsource_MISC"]},{"url":"https://github.com/stringer-rss/stringer/commit/75cb0955919a362ac49d23c8a14892d0f59ea1c4","name":"https://github.com/stringer-rss/stringer/commit/75cb0955919a362ac49d23c8a14892d0f59ea1c4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.6,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/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":"2026-09-28T17:52:24.490Z"},"source":{"advisory":"GHSA-496x-437q-h35q","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/stringer-rss/stringer/security/advisories/GHSA-496x-437q-h35q","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-28T18:33:57.068972Z","id":"CVE-2026-55160","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-28T18:35:30.003Z"}}]}}}