{"data":{"id":"62a6d4a8-1e0b-4832-883d-be0f338118ff","title":"CVE-2026-44649: SillyTavern is a locally installed user interface that allows users to interact with text generation large language…","summary":"SillyTavern versions before 1.18.0 accept the Remote-User (Authelia) and X-Authentik-Username (Authentik) HTTP headers to log users in when SSO is configured, without checking that the headers come from a trusted reverse proxy. Any network client that can reach the SillyTavern port directly can send these headers and authenticate as any user, including administrators, without a password. The flaw is exploitable only when sso.autheliaAuth: true or sso.authentikAuth: true is set in config.yaml, both of which default to false.","solution":"Fixed in 1.18.0.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-44649","publishedAt":"2026-05-29T19:16:24.720Z","cveId":"CVE-2026-44649","cweIds":["CWE-290","CWE-306","CWE-346","CWE-807"],"cvssScore":"9.8","cvssSeverity":"critical","severity":"critical","attackType":["jailbreak"],"issueType":"vulnerability","affectedPackages":["sillytavern@<= 1.17.0 (fixed: 1.18.0)"],"affectedPackageNames":["sillytavern"],"affectedPackageRefs":["npm:sillytavern"],"affectedVendors":[],"affectedVendorsRaw":["SillyTavern"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":"SillyTavern authentication bypass through spoofed SSO proxy headers","headlinePromptVersion":"h1","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"network","attackComplexity":"low","privilegesRequired":"none","userInteraction":"none","exploitMaturity":"unknown","epssScore":0.00295,"epssCheckedAt":"2026-10-14T06:09:07.659Z","kevDateAdded":null,"advisoryAliases":["GHSA-gxx6-h3g6-vwjh"],"affectedPackagesSource":"ghsa","affectedPackagesCheckedAt":"2026-10-10T03:48:02.183Z","patchAvailable":true,"disclosureDate":"2026-05-29T19:16:24.720Z","capecIds":["CAPEC-115"],"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality","integrity"],"aiComponentTargeted":"api","llmSpecific":true,"classifierConfidence":0.85,"researchCategory":null,"atlasIds":["AML.T0054"]}}