MediumVulnerabilityLLM-specific

CVE-2026-44652: SillyTavern server-side request forgery in corsProxyMiddleware

Source: NVD(opens in a new tab)
Identifier: CVE-2026-44652
Published: May 29, 2026
Record updated: October 9, 2026

Affected: sillytavern <= 1.17.0
Fixed in: 1.18.0
Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

CVE-2026-44652 affects SillyTavern versions prior to 1.18.0. The corsProxyMiddleware forwards req.params.url directly into fetch(url, ...) and only blocks circular requests to its own host, without enforcing a destination allowlist or private/loopback restrictions. This enables SSRF, tracked as CWE-918, with a CVSS 4.0 base score of 6.9 (MEDIUM) assigned by GitHub, Inc.; NVD assessment was not yet provided.

Mitigation

Fixed in 1.18.0.

Details

Scores and exploitation

Patch available: Yes
EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 11, 2026.
Disclosure date: May 29, 2026

Weaknesses and techniques

Weakness (CWE): CWE-918
Attack pattern (CAPEC): CAPEC-664

Affected

Packages: sillytavern@<= 1.17.0 (fixed: 1.18.0)

Classification

Attack type: Other
Attack sophistication: Trivial
AI component targeted: API
Impact: Confidentiality
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-44652

First tracked: May 29, 2026 at 08:09 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 85% (self-assessed)

Summary

Mitigation

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