CVE-2026-44651
SillyTavern: Reflected XSS vulnerability in the CORS proxy middleware
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | sillytavern |
| Product | sillytavern |
| Published | May 29, 2026 |
| Last Updated | Jun 1, 2026 |
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Affected Versions
SillyTavern / SillyTavern
< 1.18.0