Technology · The PHP League
The PHP League CommonMark vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 20 vulnerabilities in The PHP League CommonMark: 0 in the last 7 days and 19 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2024-58382, was published on 9 September 2026.
- Last 7 days
- 0
- Last 90 days
- 19
- Critical, all time
- 0
- Exploited in the wild
- 0
About The PHP League CommonMark
A PHP Markdown parser library compliant with CommonMark and GitHub Flavored Markdown specifications.
Latest The PHP League CommonMark vulnerabilities
- CVE-2024-58382: league/commonmark polynomial time complexity denial of servicehighCVSS 7.5EPSS 0.3%
- CVE-2026-86435: commonmark Footnote extension denial of servicehighCVSS 7.5EPSS 0.5%
- CVE-2026-86434: league/commonmark denial of service via slug collisionhighCVSS 7.5EPSS 0.5%
- CVE-2026-86433: commonmark Attributes extension denial of service via quadratic parsinghighCVSS 7.5EPSS 0.5%
- CVE-2026-86432: commonmark XmlRenderer denial of service via nested XML indentationmediumCVSS 5.3EPSS 0.4%
- CVE-2026-86431: league/commonmark AttributesExtension XSS bypass with U+000ChighCVSS 7.2EPSS 0.4%
- CVE-2026-86430: league/commonmark denial of service in parsinghighCVSS 7.5EPSS 0.5%
- CVE-2026-86429: League CommonMark quadratic parsing complexity denial of servicehighCVSS 7.5EPSS 0.5%
- CVE-2026-86428: commonmark denial of service in AttributesExtensionhighCVSS 7.5EPSS 0.5%
- league/commonmark Denial of service in Attributes extensionhighCVSS 7.5
- league/commonmark denial of service in SmartPunct and Attributes extensionshighCVSS 7.5
- League CommonMark XSS via form feed in AttributesExtensionhighCVSS 7.2
- League CommonMark denial of service via parsing algorithmshighCVSS 7.5
- thephpleague commonmark denial of service in XmlRenderermediumCVSS 5.3
- thephpleague commonmark denial of service in UniqueSlugNormalizerhighCVSS 7.5
- league commonmark denial of service in Footnote extensionhighCVSS 7.5
- league/commonmark denial of service in AttributesExtensionhighCVSS 7.5
- CVE-2026-71488: league commonmark quadratic-time denial of service in Markdown parsinghighCVSS 7.5EPSS 0.6%
- CVE-2026-71478: thephpleague commonmark XSS bypass in AttributesExtensionmediumCVSS 6.1EPSS 0.4%
- CVE-2025-46734: league/commonmark XSS in Attributes extensionmediumCVSS 6.4EPSS 0.4%
Most severe The PHP League CommonMark vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-71488: league commonmark quadratic-time denial of service in Markdown parsinghighCVSS 7.5EPSS 0.6%
- CVE-2026-86429: League CommonMark quadratic parsing complexity denial of servicehighCVSS 7.5EPSS 0.5%
- CVE-2026-86434: league/commonmark denial of service via slug collisionhighCVSS 7.5EPSS 0.5%
- CVE-2026-86433: commonmark Attributes extension denial of service via quadratic parsinghighCVSS 7.5EPSS 0.5%
- CVE-2026-86435: commonmark Footnote extension denial of servicehighCVSS 7.5EPSS 0.5%
- CVE-2026-86430: league/commonmark denial of service in parsinghighCVSS 7.5EPSS 0.5%
- CVE-2026-86428: commonmark denial of service in AttributesExtensionhighCVSS 7.5EPSS 0.5%
- CVE-2024-58382: league/commonmark polynomial time complexity denial of servicehighCVSS 7.5EPSS 0.3%
- league/commonmark Denial of service in Attributes extensionhighCVSS 7.5
- league/commonmark denial of service in SmartPunct and Attributes extensionshighCVSS 7.5
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 6 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 4 | 0 | |
| 7 Sep 2026 | 9 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/commonmark.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "The PHP League CommonMark vulnerabilities", https://junglewise.ai/threats/technologies/commonmark, 26 September 2026.