CVE-2026-44651

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.

PUBLISHED Reserved 2026-05-07 | Published 2026-05-29 | Updated 2026-06-01 | Assigner GitHub_M

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

References

github.com/...Tavern/security/advisories/GHSA-xc4x-2452-5gc9

cve.org (CVE-2026-44651)

nvd.nist.gov (CVE-2026-44651)

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