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CVE-2026-44648— SillyTavern: Existing sessions are not invalidated after password change, allowing session reuse and account takeover

CVSS 7.5 · High

Possible ATT&CK Techniques 1AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProductVersion RangeStatus
SillyTavernSillyTavern< 1.18.0affected
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I. Basic Information for CVE-2026-44648

Vulnerability Information
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Vulnerability Title
SillyTavern: Existing sessions are not invalidated after password change, allowing session reuse and account takeover
Source: NVD (National Vulnerability Database)
Vulnerability 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 1.18.0, SillyTavern relies on cookie-session for authentication, storing all session data (user handle, permissions) in a signed cookie. The endpoints POST /api/users/change-password and POST /api/users/recover-step2 only update the password hash in the database but do not expire current sessions. Because the session is stateless and stored entirely in the client cookie, there is no server-side mechanism to revoke a token once issued. This vulnerability is fixed in 1.18.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不充分的会话过期机制
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
SillyTavernSillyTavern < 1.18.0 -

II. Public POCs for CVE-2026-44648

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III. Intelligence Information for CVE-2026-44648

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Vendor Advisories for CVE-2026-44648 (1)

Same Patch Batch · SillyTavern · 2026-05-29 · 6 CVEs total

CVE-2026-446499.8 CRITICALSillyTavern: Authentication Bypass via SSO Header Injection
CVE-2026-446509.1 CRITICALSillyTavern: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'
CVE-2026-463728.5 HIGHSillyTavern: SSRF in SearXNG Search Proxy via Unvalidated baseUrl
CVE-2026-44651SillyTavern: Reflected XSS vulnerability in the CORS proxy middleware
CVE-2026-44652SillyTavern: SSRF vulnerability in the CORS proxy middleware

IV. Related Vulnerabilities

Same product: SillyTavern
Same vendor: SillyTavern
Same weakness: CWE-613

V. Comments for CVE-2026-44648

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