---
id: CVE-2023-4241
aliases:
  - GHSA-c3x7-354f-4p2x
title: lol-html panics on certain HTML inputs
summary: lol-html panics on certain HTML inputs
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: lol-html
product: lol-html
ecosystem: rust
affected:
  - lol-html < 1.1.1
patched:
  - lol-html 1.1.1
published: '2023-08-09'
updated: '2026-07-08'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-c3x7-354f-4p2x'
references:
  - url: >-
      https://github.com/cloudflare/lol-html/security/advisories/GHSA-c3x7-354f-4p2x
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2023-4241'
  - url: 'https://github.com/cloudflare/lol-html'
tags:
  - osv
  - rust
epss: 0.00687
epssPercentile: 0.51306
ingestedAt: '2026-07-09T18:56:37.297Z'
---

## Overview

### Impact
lol-html can cause panics on certain HTML inputs. Anyone processing arbitrary 3rd party HTML with the library is affected.

### Patches
The problem has been patched and released as v1.1.1

### Workarounds
No workarounds exist.


## Affected packages

- `lol-html < 1.1.1`

## Remediation

Upgrade to a patched release:

- `lol-html 1.1.1`