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CVE-2026-44651: SillyTavern is a locally installed user interface that allows users to interact with text generation…

Occurred
May 29, 2026
Published
May 29, 2026
Source
NVD CVE

Summary

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, when fetch(url) throws, the code sends: res.status(500).send('Error occurred while trying to proxy to: ' + url + ' ' + error). The url value is attacker-controlled (req.params.url) and is not HTML-escaped before rendering. This vulnerability is fixed in 1.18.0.

Tags

  • CVE
  • CVE-2026-44651

Classification

Category confidence: 90%
Severity confidence: 85%

Rationale: SillyTavern is an LLM UI with a reflected XSS vulnerability in error messages, affecting text generation interfaces.

Classifier: Qwen/Qwen3.5-35B-A3B-FP8

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