CVE-2026-44651
Medium
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.
SeverityMedium
CVSS6.9
Exploit probability—
ProductSillytavern
PublishedMay 29, 2026
First seenMay 29, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- sillytavern1.18.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sillytavernnpm | v < 1.18.0 | 1.18.0 |
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