# CVE-2024-58382: php-league-commonmark: league/commonmark versions before 2.6.0 contain polynomial time complexity vulnerabilities in Markdown parsing that a...

CVE-2024-58382 is fixed in php-league-commonmark on 1 platform, first by DEBIAN-CVE-2024-58382, released September 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-58382
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0049
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 9, 2026

## Description

league/commonmark versions before 2.6.0 contain polynomial time complexity vulnerabilities in Markdown parsing that allow attackers to cause denial of service. Attackers can submit carefully crafted Markdown inputs designed to trigger worst-case performance, and sending multiple requests in parallel exhausts CPU resources and PHP-FPM processes.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | php-league-commonmark Debian 13.5 (trixie) | 2.6.0-1 | [DEBIAN-CVE-2024-58382](https://patchblox.com/security/data/fix/linux/debian-cve-2024-58382.md) | Sep 12, 2026 |
| Linux | php-league-commonmark Debian 14 | 2.6.0-1 | [DEBIAN-CVE-2024-58382](https://patchblox.com/security/data/fix/linux/debian-cve-2024-58382.md) | Sep 12, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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