{"id":"CVE-2026-34526","state":"PUBLISHED","title":"SillyTavern: Incomplete IP validation in /api/search/visit allows SSRF via localhost and IPv6","description":"SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to version 1.17.0, in src/endpoints/search.js, the hostname is checked against /^\\d+\\.\\d+\\.\\d+\\.\\d+$/. This only matches literal dotted-quad IPv4 (e.g. 127.0.0.1, 10.0.0.1). It does not catch: localhost (hostname, not dotted-quad), [::1] (IPv6 loopback), and DNS names resolving to internal addresses (e.g. localtest.me -> 127.0.0.1). A separate port check (urlObj.port !== '') limits exploitation to services on default ports (80/443), making this lower severity than a fully unrestricted SSRF. This issue has been patched in version 1.17.0.","publishedAt":"2026-04-02T17:16:55.897Z","updatedAt":"2026-04-02T17:48:03.787Z","severity":{"score":5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["SillyTavern SillyTavern"],"affected":[{"vendor":"SillyTavern","product":"SillyTavern","versions":[{"version":"< 1.17.0","status":"affected"}]}],"references":["https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-wm7j-m6jm-8797","https://github.com/SillyTavern/SillyTavern/releases/tag/1.17.0"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/34xxx/CVE-2026-34526.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-34526","state":"PUBLISHED","datePublished":"2026-04-02T17:16:55.897Z","dateUpdated":"2026-04-02T17:48:03.787Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-30T16:03:31.048Z"},"containers":{"cna":{"title":"SillyTavern: Incomplete IP validation in /api/search/visit allows SSRF via localhost and IPv6","descriptions":[{"lang":"en","value":"SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to version 1.17.0, in src/endpoints/search.js, the hostname is checked against /^\\d+\\.\\d+\\.\\d+\\.\\d+$/. This only matches literal dotted-quad IPv4 (e.g. 127.0.0.1, 10.0.0.1). It does not catch: localhost (hostname, not dotted-quad), [::1] (IPv6 loopback), and DNS names resolving to internal addresses (e.g. localtest.me -> 127.0.0.1). A separate port check (urlObj.port !== '') limits exploitation to services on default ports (80/443), making this lower severity than a fully unrestricted SSRF. This issue has been patched in version 1.17.0."}],"affected":[{"vendor":"SillyTavern","product":"SillyTavern","versions":[{"version":"< 1.17.0","status":"affected"}]}],"references":[{"url":"https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-wm7j-m6jm-8797","name":"https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-wm7j-m6jm-8797","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/SillyTavern/SillyTavern/releases/tag/1.17.0","name":"https://github.com/SillyTavern/SillyTavern/releases/tag/1.17.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","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":"2026-04-02T17:16:55.897Z"},"source":{"advisory":"GHSA-wm7j-m6jm-8797","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-wm7j-m6jm-8797","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-02T17:47:59.886274Z","id":"CVE-2026-34526","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":"2026-04-02T17:48:03.787Z"}}]}}}