CVE-2026-44651 — SillyTavern: Reflected XSS vulnerability in the CORS proxy middleware
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 mo…
Published: 2026-05-29 · CVSS: 6.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7