{"id":"CVE-2026-44651","aliases":["GHSA-xc4x-2452-5gc9"],"url":"https://o3.security/vulnerability/CVE-2026-44651","summary":"SillyTavern: Reflected XSS vulnerability in the CORS proxy middleware","details":"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:\nres.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":"2026-05-29T17:49:19.494Z","modified":"2026-08-07T11:31:26.120571906Z","cvss":null,"epss":{"score":0.00323,"percentile":0.24767,"asOf":"2026-08-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"sillytavern","fixedVersion":"1.18.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44651.json"},{"type":"ADVISORY","url":"https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-xc4x-2452-5gc9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44651"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:31:26.120571906Z"}}