Vendor
League vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 9 vulnerabilities in League: 0 in the last 7 days and 5 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, league/commonmark DisallowedRawHtml XSS bypass in tag parsing, was published on 30 September 2026. Nothing in the last four weeks, down from 2 vulnerabilities in the four before.
- Last 7 days
- 0
- Last 90 days
- 5
- Critical, all time
- 0
- Exploited in the wild
- 0
About League
Organization that maintains open-source software projects including CommonMark and PHP League packages.
Latest League vulnerabilities
- league/commonmark DisallowedRawHtml XSS bypass in tag parsingmediumCVSS 6.1
- league/commonmark quadratic DoS in GitHub Flavored Markdown table parserhighCVSS 7.5
- 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-2026-86429: League CommonMark quadratic parsing complexity denial of servicehighCVSS 7.5EPSS 0.5%
- CVE-2026-71488: league commonmark quadratic-time denial of service in Markdown parsinghighCVSS 7.5EPSS 0.6%
- league commonmark denial of service in Footnote extensionhighCVSS 7.5
- league/commonmark denial of service in AttributesExtensionhighCVSS 7.5
- CVE-2025-46734: league/commonmark XSS in Attributes extensionmediumCVSS 6.4EPSS 0.4%
Most severe League 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%
- league/commonmark quadratic DoS in GitHub Flavored Markdown table parserhighCVSS 7.5
- league commonmark denial of service in Footnote extensionhighCVSS 7.5
- league/commonmark denial of service in AttributesExtensionhighCVSS 7.5
- CVE-2025-46734: league/commonmark XSS in Attributes extensionmediumCVSS 6.4EPSS 0.4%
- league/commonmark DisallowedRawHtml XSS bypass in tag parsingmediumCVSS 6.1
Vulnerabilities per week
Nothing in the last four weeks, down from 2 vulnerabilities in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 3 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 2 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many League vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/league)<a href="https://junglewise.ai/threats/vendors/league"><img src="https://junglewise.ai/threats/vendors/league/badge.svg" alt="League vulnerabilities" /></a>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/vendors/league.json, and this page as text at https://junglewise.ai/threats/vendors/league.md, 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 vulnerabilities", https://junglewise.ai/threats/vendors/league, 9 November 2026.