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CVE-2026-86433

🗓️ 07 Sep 2026 12:53:52Reported by VulnCheckType 
cve
 cve
🔗 web.nvd.nist.gov👁 17 Views

Quadratic-time DoS in commonmark 1.5.0-2.8.4 Attributes extension via repeated attribute blocks.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-86433 commonmark 1.5.0 before 2.8.4 Denial of Service via Attributes
7 Sep 202612:53
–cvelist
debiancve
Debian CVE
CVE-2026-86433
7 Sep 202612:53
–debiancve
euvd
EUVD
EUVD-2026-72391
7 Sep 202612:53
–euvd
nvd
NVD
CVE-2026-86433
7 Sep 202613:20
–nvd
osv
OSV
DEBIAN-CVE-2026-86433
7 Sep 202613:20
–osv
osv
OSV
UBUNTU-CVE-2026-86433
7 Sep 202613:20
–osv
ptsecurity
Positive Technologies
PT-2026-86799
7 Sep 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-86433: Inefficient Algorithmic Complexity
7 Sep 202600:00
–rapid7
snyk
Snyk
Inefficient Algorithmic Complexity
6 Aug 202620:39
–snyk
ubuntucve
UbuntuCve
CVE-2026-86433
7 Sep 202613:20
–ubuntucve
Rows per page
Vulners
CNA
Node
thephpleaguecommonmarkRange1.5.0–2.8.4
[
  {
    "vendor": "thephpleague",
    "product": "commonmark",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "version": "1.5.0",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "2.8.4"
      },
      {
        "version": "2.8.4",
        "status": "unaffected",
        "versionType": "semver"
      }
    ]
  }
]

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08 Sep 2026 19:57Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.17.5
CVSS 48.7
EPSS0.00509
SSVC
17