Vulnerability library
Security checkApril 06, 2026

SillyTavern: Incomplete IP validation in /api/search/visit allows SSRF via localhost and IPv6

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Medium severitynpmsillytavern

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Description

Distinct from CVE-2025-59159 and CVE-2026-26286 (all fixed in v1.16.0). This endpoint is still unpatched.

In src/endpoints/search.js line 419, 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).

Recommendation

Update the sillytavern package to the latest compatible version. Followings are version details:

  • Affected version(s): <= 1.16.0
  • Patched version(s): 1.17.0

References

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Related Issues

See something that needs correcting? Let us knowUpdated April 06, 2026