XSS in Texlyre
CVE-2026-121588
TeXlyre from 0.11.0 before 0.13.5 contains a stored cross-site scripting vulnerability that allows attackers to execute script by supplying malicious LSP or typesetter recipe icons. Attackers can trick victims into importing a recipe whose icon contains an HTML event handler, persistently accessing local projects and repository credentials.
Vulnerability class: XSS (Cross-Site Scripting)
Published .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/TeXlyre/texlyre/security/advisories/GHSA-gg75-v533-34cq (vendor-advisory)
- github.com/TeXlyre/texlyre/commit/92b50ca050af8473f0fd51a048a7e1d60dcdb2dc (patch)
- github.com/TeXlyre/texlyre/blob/9621db54893cc2203be5aed8615f54a17653be4d/src/co… (technical-description)
- www.vulncheck.com/advisories/texlyre-from-0.11.0-before-0.13.5-stored-xss-via-r… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-121588?
- CVE-2026-121588 is a medium-severity vulnerability in Texlyre, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-11-03.
- How severe is CVE-2026-121588?
- Medium severity. CVSS v3 base score is 6.1 out of 10.