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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-44651

SillyTavern: Reflected XSS vulnerability in the CORS proxy middleware

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, 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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

SillyTavern SillyTavern

  • < 1.18.0affected

References