{"action":"Upgrade sillytavern to 1.18.0 or later.","affected":[{"fixed":"1.18.0","introduced":"0"}],"component":"sillytavern","cve_ids":["CVE-2026-44649"],"ecosystem":"npm","epss":0.00295,"exploited":false,"fixed_versions":["1.18.0"],"ghsa_id":"GHSA-gxx6-h3g6-vwjh","id":"tcs_01M5KFSSY2F45P042SV6M54FCX","modified_at":"2026-06-09T10:45:16.354099810Z","published_at":"2026-05-12T22:23:30Z","references":["https://osv.dev/vulnerability/GHSA-gxx6-h3g6-vwjh","https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-gxx6-h3g6-vwjh","https://nvd.nist.gov/vuln/detail/CVE-2026-44649","https://github.com/SillyTavern/SillyTavern","https://github.com/SillyTavern/SillyTavern/releases/tag/1.18.0"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-gxx6-h3g6-vwjh","url":"https://osv.dev/vulnerability/GHSA-gxx6-h3g6-vwjh"}],"summary":"SillyTavern has Authentication Bypass via SSO Header Injection"}