Technology · Packagist
league/commonmark (Packagist) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 24 vulnerabilities in league/commonmark (Packagist): 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 league/commonmark (Packagist)
A PHP Markdown parser for the CommonMark specification.
Latest league/commonmark (Packagist) vulnerabilities
- CVE-2024-58382: league/commonmark polynomial time complexity denial of servicehighCVSS 7.5EPSS 0.3%
- 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
- league/commonmark: Denial of service via deeply nested XML outputlowCVSS 3.1
- thephpleague commonmark denial of service in XmlRenderermediumCVSS 5.3
- thephpleague commonmark denial of service in UniqueSlugNormalizerhighCVSS 7.5
- league/commonmark: Denial of service via colliding heading slugslowCVSS 3.1
- league/commonmark: Denial of service via duplicate footnote definitionslowCVSS 3.1
- league commonmark denial of service in Footnote extensionhighCVSS 7.5
- league/commonmark: Denial of service via adjacent inline attribute blockslowCVSS 3.1
- 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-2026-33347: league/commonmark has an embed extension allowed_domains bypassmediumCVSS 4EPSS 0.3%
- CVE-2026-30838: CommonMark has DisallowedRawHtml extension bypass via whitespace in HTML tag namesmediumCVSS 4EPSS 0.2%
- CVE-2025-46734: league/commonmark XSS in Attributes extensionmediumCVSS 6.4EPSS 0.4%
- CVE-2018-20583: PHP League CommonMark vulnerable to Cross-Site Scripting (XSS)lowCVSS 3EPSS 1.6%
- CVE-2019-10010: Moderate severity vulnerability that affects league/commonmarklowCVSS 3EPSS 1.1%
Most severe league/commonmark (Packagist) 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-2026-86430: 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
- League CommonMark denial of service via parsing algorithmshighCVSS 7.5
- thephpleague commonmark denial of service in UniqueSlugNormalizerhighCVSS 7.5
- league commonmark denial of service in Footnote extensionhighCVSS 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 | 10 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 4 | 0 | |
| 7 Sep 2026 | 5 | 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/league-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, "league/commonmark (Packagist) vulnerabilities", https://junglewise.ai/threats/technologies/league-commonmark, 26 September 2026.