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CVE-2026-86430 league/commonmark before 2.9.1 Denial of Service via parsing

🗓️ 07 Sep 2026 12:53:50Reported by VulnCheckType 
cvelist
 cvelist
🔗 www.cve.org👁 51 Views

DoS in league/commonmark before 2.9.1 via crafted Markdown causing super-linear CPU work.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-86430
7 Sep 202615:00
–circl
cve
CVE
CVE-2026-86430
7 Sep 202612:53
–cve
debiancve
Debian CVE
CVE-2026-86430
7 Sep 202612:53
–debiancve
euvd
EUVD
EUVD-2026-72388
7 Sep 202612:53
–euvd
mend
Mend
CVE-2026-86430
7 Sep 202612:53
–mend
nvd
NVD
CVE-2026-86430
7 Sep 202613:20
–nvd
osv_debian
osv_debian
DEBIAN-CVE-2026-86430
7 Sep 202613:20
–osv_debian
osv_ghsa
osv_ghsa
GHSA-J8PM-GJ4C-RQ4X league/commonmark: Denial of service via crafted code fences, reference links, and emphasis delimiters
1 Sep 202620:17
–osv_ghsa
osv_ubuntu
osv_ubuntu
UBUNTU-CVE-2026-86430
7 Sep 202613:20
–osv_ubuntu
ptsecurity
Positive Technologies
PT-2026-86796
7 Sep 202600:00
–ptsecurity
Rows per page
[
  {
    "vendor": "thephpleague",
    "product": "commonmark",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "version": "0.6.0",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "2.9.1"
      },
      {
        "version": "2.9.1",
        "status": "unaffected",
        "versionType": "semver"
      }
    ],
    "packageURL": "pkg:composer/league/commonmark"
  }
]

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