# CVE-2026-44648: SillyTavern insufficient session expiration after password change

Source: https://junglewise.ai/threats/cve-2026-44648-sillytavern-insufficient-session-expiration-after-password-change  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-29. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-44648 · Severity: high · CVSS 7.5 · Published 2026-05-29

SillyTavern is a user interface for interacting with text-generation AI models. A security flaw exists where changing an account password does not disconnect other active sessions. This means if an attacker manages to steal a user's login cookie, they can maintain permanent access to the account even after the legitimate owner resets their password, potentially exposing private conversations and API keys.

Technologies: [sillytavern (npm)](https://junglewise.ai/threats/technologies/sillytavern). Vendors: [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2026-44648 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-44648 being exploited in the wild.

**How severe is CVE-2026-44648?** High severity, with a CVSS score of 7.5, published 29 May 2026.

**Which products and versions are affected?** sillytavern (npm) <= 1.17.0, SEMVER:introduced=0,fixed=1.18.0.

**Is there a fix for CVE-2026-44648?** Yes. sillytavern (npm): upgrade to 1.18.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-44648 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-44648?** Check whether you run sillytavern (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- sillytavern (npm): upgrade to 1.18.0 or later

  ```sh
  npm install sillytavern@1.18.0
  ```


## Technical details

SillyTavern utilizes stateless signed cookies via the cookie-session middleware to manage authentication. The application's password change and recovery endpoints (POST /api/users/change-password and POST /api/users/recover-step2) update the password hash in the database but do not implement a mechanism to revoke or expire existing session cookies. Because the session data is stored entirely on the client side, an attacker who has obtained a session cookie (e.g., via XSS or MITM) can continue to authenticate successfully until the cookie's natural expiration, which defaults to 400 days. This vulnerability is classified as CWE-613 (Insufficient Session Expiration). A fix was introduced in version 1.18.0.

## Affected products

- SillyTavern SillyTavern <= 1.17.0

## Identifiers

- CVE-2026-44648
- GHSA-wmm3-h9qj-p5v6

## Timeline

- 2026-05-11: disclosed
- 2026-05-12: advisory: GitHub Advisory published
- 2026-05-11: patched: Version 1.18.0 released

## References

- [https://api.github.com/users/zzzm0919](https://api.github.com/users/zzzm0919)
- [https://github.com/zzzm0919](https://github.com/zzzm0919)
- [https://api.github.com/users/zzzm0919/gists%7B/gist_id%7D](https://api.github.com/users/zzzm0919/gists%7B/gist_id%7D)
- [https://api.github.com/users/zzzm0919/repos](https://api.github.com/users/zzzm0919/repos)
- [https://avatars.githubusercontent.com/u/178799851?v=4](https://avatars.githubusercontent.com/u/178799851?v=4)
- [https://api.github.com/users/zzzm0919/events%7B/privacy%7D](https://api.github.com/users/zzzm0919/events%7B/privacy%7D)

## Related threats

- [SillyTavern SSRF in SearXNG search proxy API](https://junglewise.ai/threats/cve-2026-46372-sillytavern-ssrf-in-searxng-search-proxy-api)
- [SillyTavern SSRF in CORS proxy middleware](https://junglewise.ai/threats/cve-2026-44652-sillytavern-ssrf-in-cors-proxy-middleware)
- [SillyTavern reflected XSS in CORS proxy middleware](https://junglewise.ai/threats/cve-2026-44651-sillytavern-reflected-xss-in-cors-proxy-middleware)
- [SillyTavern path traversal and directory deletion in extensions API](https://junglewise.ai/threats/cve-2026-44650-sillytavern-path-traversal-and-directory-deletion-in-extensions)
- [SillyTavern authentication bypass via SSO header injection](https://junglewise.ai/threats/cve-2026-44649-sillytavern-authentication-bypass-via-sso-header-injection)