---
id: "CVE-2026-121588"
kind: "vulnerability"
aliases: ["CVE-2026-121588"]
title: "TeXlyre: stored XSS via malicious LSP or typesetter recipe icons"
severity: "medium"
cvss: 6.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["latex", "package", "texlyre", "web-editor"]
not_affected_if: ["fixed-version", "no-untrusted-recipes"]
published_at: "2026-11-03T17:18:11+00:00"
first_seen_at: "2026-11-03T17:21:56+00:00"
updated_at: "2026-11-03T17:24:20+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121588", "first_seen_at": "2026-11-03T17:21:56+00:00"}]
---

# TeXlyre: stored XSS via malicious LSP or typesetter recipe icons

TeXlyre versions 0.11.0 before 0.13.5 render HTML from recipe icons without sanitizing them, so a crafted recipe can run script in the app. An attacker who tricks a user into importing that recipe can reach local projects and repository credentials.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed TeXlyre version; affected versions are 0.11.0 up to but not including `0.13.5`.
- Review any LSP or typesetter recipes imported from outside sources for HTML event handlers in icon fields.

## Fix

- Move to `0.13.5` or later.

## Timeline

- 2026-11-03T17:21:56+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121588

## Documents

- [advisory] Vendor advisory: github.com https://github.com/TeXlyre/texlyre/security/advisories/GHSA-gg75-v533-34cq
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/texlyre-from-0.11.0-before-0.13.5-stored-xss-via-recipe-icon-import
- [fix] Patch: github.com https://github.com/TeXlyre/texlyre/commit/92b50ca050af8473f0fd51a048a7e1d60dcdb2dc

## From the sources

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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_