CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-86430

league/commonmark versions before 2.9.1 contain multiple denial of service vulnerabilities in fenced code block detection, reference link label lookup, and emphasis delimiter processing that perform super-linear work on crafted input. Attackers can submit specially crafted Markdown with long backtick runs, nested brackets, or delimiter sequences to consume disproportionate CPU time and prevent legitimate requests from completing.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.003

EPSS Ranking 20.8%

CVSS Severity

CVSS v3 Score 7.5

References

Products affected by CVE-2026-86430

Thephpleague » Commonmark » Version: N/A

cpe:2.3:a:thephpleague:commonmark:-
Thephpleague » Commonmark » Version: 0.1.0

cpe:2.3:a:thephpleague:commonmark:0.1.0
Thephpleague » Commonmark » Version: 0.1.1

cpe:2.3:a:thephpleague:commonmark:0.1.1
Thephpleague » Commonmark » Version: 0.1.2

cpe:2.3:a:thephpleague:commonmark:0.1.2
Thephpleague » Commonmark » Version: 0.10.0

cpe:2.3:a:thephpleague:commonmark:0.10.0
Thephpleague » Commonmark » Version: 0.11.0

cpe:2.3:a:thephpleague:commonmark:0.11.0
Thephpleague » Commonmark » Version: 0.11.1

cpe:2.3:a:thephpleague:commonmark:0.11.1
Thephpleague » Commonmark » Version: 0.11.2

cpe:2.3:a:thephpleague:commonmark:0.11.2
Thephpleague » Commonmark » Version: 0.11.3

cpe:2.3:a:thephpleague:commonmark:0.11.3
Thephpleague » Commonmark » Version: 0.12.0

cpe:2.3:a:thephpleague:commonmark:0.12.0
Thephpleague » Commonmark » Version: 0.13.0

cpe:2.3:a:thephpleague:commonmark:0.13.0
Thephpleague » Commonmark » Version: 0.13.1

cpe:2.3:a:thephpleague:commonmark:0.13.1
Thephpleague » Commonmark » Version: 0.13.2

cpe:2.3:a:thephpleague:commonmark:0.13.2
Thephpleague » Commonmark » Version: 0.13.3

cpe:2.3:a:thephpleague:commonmark:0.13.3
Thephpleague » Commonmark » Version: 0.13.4

cpe:2.3:a:thephpleague:commonmark:0.13.4
Thephpleague » Commonmark » Version: 0.14.0

cpe:2.3:a:thephpleague:commonmark:0.14.0
Thephpleague » Commonmark » Version: 0.15.0

cpe:2.3:a:thephpleague:commonmark:0.15.0
Thephpleague » Commonmark » Version: 0.15.1

cpe:2.3:a:thephpleague:commonmark:0.15.1
Thephpleague » Commonmark » Version: 0.15.2

cpe:2.3:a:thephpleague:commonmark:0.15.2
Thephpleague » Commonmark » Version: 0.15.3

cpe:2.3:a:thephpleague:commonmark:0.15.3
Thephpleague » Commonmark » Version: 0.15.4

cpe:2.3:a:thephpleague:commonmark:0.15.4
Thephpleague » Commonmark » Version: 0.15.5

cpe:2.3:a:thephpleague:commonmark:0.15.5
Thephpleague » Commonmark » Version: 0.15.6

cpe:2.3:a:thephpleague:commonmark:0.15.6
Thephpleague » Commonmark » Version: 0.15.7

cpe:2.3:a:thephpleague:commonmark:0.15.7
Thephpleague » Commonmark » Version: 0.16.0

cpe:2.3:a:thephpleague:commonmark:0.16.0
Thephpleague » Commonmark » Version: 0.17.0

cpe:2.3:a:thephpleague:commonmark:0.17.0
Thephpleague » Commonmark » Version: 0.17.1

cpe:2.3:a:thephpleague:commonmark:0.17.1
Thephpleague » Commonmark » Version: 0.17.2

cpe:2.3:a:thephpleague:commonmark:0.17.2
Thephpleague » Commonmark » Version: 0.17.3

cpe:2.3:a:thephpleague:commonmark:0.17.3
Thephpleague » Commonmark » Version: 0.17.4

cpe:2.3:a:thephpleague:commonmark:0.17.4
Thephpleague » Commonmark » Version: 0.17.5

cpe:2.3:a:thephpleague:commonmark:0.17.5
Thephpleague » Commonmark » Version: 0.18.0

cpe:2.3:a:thephpleague:commonmark:0.18.0
Thephpleague » Commonmark » Version: 0.18.1

cpe:2.3:a:thephpleague:commonmark:0.18.1
Thephpleague » Commonmark » Version: 0.18.2

cpe:2.3:a:thephpleague:commonmark:0.18.2
Thephpleague » Commonmark » Version: 0.18.3

cpe:2.3:a:thephpleague:commonmark:0.18.3
Thephpleague » Commonmark » Version: 0.18.4

cpe:2.3:a:thephpleague:commonmark:0.18.4
Thephpleague » Commonmark » Version: 0.18.5

cpe:2.3:a:thephpleague:commonmark:0.18.5
Thephpleague » Commonmark » Version: 0.19.0

cpe:2.3:a:thephpleague:commonmark:0.19.0
Thephpleague » Commonmark » Version: 0.19.1

cpe:2.3:a:thephpleague:commonmark:0.19.1
Thephpleague » Commonmark » Version: 0.19.2

cpe:2.3:a:thephpleague:commonmark:0.19.2
Thephpleague » Commonmark » Version: 0.19.3

cpe:2.3:a:thephpleague:commonmark:0.19.3
Thephpleague » Commonmark » Version: 0.2.0

cpe:2.3:a:thephpleague:commonmark:0.2.0
Thephpleague » Commonmark » Version: 0.2.1

cpe:2.3:a:thephpleague:commonmark:0.2.1
Thephpleague » Commonmark » Version: 0.3.0

cpe:2.3:a:thephpleague:commonmark:0.3.0
Thephpleague » Commonmark » Version: 0.4.0

cpe:2.3:a:thephpleague:commonmark:0.4.0
Thephpleague » Commonmark » Version: 0.5.0

cpe:2.3:a:thephpleague:commonmark:0.5.0
Thephpleague » Commonmark » Version: 0.5.1

cpe:2.3:a:thephpleague:commonmark:0.5.1
Thephpleague » Commonmark » Version: 0.6.0

cpe:2.3:a:thephpleague:commonmark:0.6.0
Thephpleague » Commonmark » Version: 0.6.1

cpe:2.3:a:thephpleague:commonmark:0.6.1
Thephpleague » Commonmark » Version: 0.7.0

cpe:2.3:a:thephpleague:commonmark:0.7.0
Thephpleague » Commonmark » Version: 0.7.1

cpe:2.3:a:thephpleague:commonmark:0.7.1
Thephpleague » Commonmark » Version: 0.7.2

cpe:2.3:a:thephpleague:commonmark:0.7.2
Thephpleague » Commonmark » Version: 0.8.0

cpe:2.3:a:thephpleague:commonmark:0.8.0
Thephpleague » Commonmark » Version: 0.9.0

cpe:2.3:a:thephpleague:commonmark:0.9.0
Thephpleague » Commonmark » Version: 1.0.0

cpe:2.3:a:thephpleague:commonmark:1.0.0
Thephpleague » Commonmark » Version: 1.1.0

cpe:2.3:a:thephpleague:commonmark:1.1.0
Thephpleague » Commonmark » Version: 1.1.1

cpe:2.3:a:thephpleague:commonmark:1.1.1
Thephpleague » Commonmark » Version: 1.1.2

cpe:2.3:a:thephpleague:commonmark:1.1.2
Thephpleague » Commonmark » Version: 1.1.3

cpe:2.3:a:thephpleague:commonmark:1.1.3
Thephpleague » Commonmark » Version: 1.2.0

cpe:2.3:a:thephpleague:commonmark:1.2.0
Thephpleague » Commonmark » Version: 1.2.1

cpe:2.3:a:thephpleague:commonmark:1.2.1
Thephpleague » Commonmark » Version: 1.2.2

cpe:2.3:a:thephpleague:commonmark:1.2.2
Thephpleague » Commonmark » Version: 1.3.0

cpe:2.3:a:thephpleague:commonmark:1.3.0
Thephpleague » Commonmark » Version: 1.3.1

cpe:2.3:a:thephpleague:commonmark:1.3.1
Thephpleague » Commonmark » Version: 1.3.2

cpe:2.3:a:thephpleague:commonmark:1.3.2
Thephpleague » Commonmark » Version: 1.3.3

cpe:2.3:a:thephpleague:commonmark:1.3.3
Thephpleague » Commonmark » Version: 1.3.4

cpe:2.3:a:thephpleague:commonmark:1.3.4
Thephpleague » Commonmark » Version: 1.4.0

cpe:2.3:a:thephpleague:commonmark:1.4.0
Thephpleague » Commonmark » Version: 1.4.1

cpe:2.3:a:thephpleague:commonmark:1.4.1
Thephpleague » Commonmark » Version: 1.4.2

cpe:2.3:a:thephpleague:commonmark:1.4.2
Thephpleague » Commonmark » Version: 1.4.3

cpe:2.3:a:thephpleague:commonmark:1.4.3
Thephpleague » Commonmark » Version: 1.5.0

cpe:2.3:a:thephpleague:commonmark:1.5.0
Thephpleague » Commonmark » Version: 1.5.1

cpe:2.3:a:thephpleague:commonmark:1.5.1
Thephpleague » Commonmark » Version: 1.5.2

cpe:2.3:a:thephpleague:commonmark:1.5.2
Thephpleague » Commonmark » Version: 1.5.3

cpe:2.3:a:thephpleague:commonmark:1.5.3
Thephpleague » Commonmark » Version: 1.5.4

cpe:2.3:a:thephpleague:commonmark:1.5.4
Thephpleague » Commonmark » Version: 1.5.5

cpe:2.3:a:thephpleague:commonmark:1.5.5
Thephpleague » Commonmark » Version: 1.5.6

cpe:2.3:a:thephpleague:commonmark:1.5.6
Thephpleague » Commonmark » Version: 1.5.7

cpe:2.3:a:thephpleague:commonmark:1.5.7
Thephpleague » Commonmark » Version: 1.5.8

cpe:2.3:a:thephpleague:commonmark:1.5.8
Thephpleague » Commonmark » Version: 1.6.0

cpe:2.3:a:thephpleague:commonmark:1.6.0
Thephpleague » Commonmark » Version: 1.6.1

cpe:2.3:a:thephpleague:commonmark:1.6.1
Thephpleague » Commonmark » Version: 1.6.2

cpe:2.3:a:thephpleague:commonmark:1.6.2
Thephpleague » Commonmark » Version: 1.6.3

cpe:2.3:a:thephpleague:commonmark:1.6.3
Thephpleague » Commonmark » Version: 1.6.4

cpe:2.3:a:thephpleague:commonmark:1.6.4
Thephpleague » Commonmark » Version: 1.6.5

cpe:2.3:a:thephpleague:commonmark:1.6.5
Thephpleague » Commonmark » Version: 1.6.6

cpe:2.3:a:thephpleague:commonmark:1.6.6
Thephpleague » Commonmark » Version: 1.6.7

cpe:2.3:a:thephpleague:commonmark:1.6.7
Thephpleague » Commonmark » Version: 2.0.0

cpe:2.3:a:thephpleague:commonmark:2.0.0
Thephpleague » Commonmark » Version: 2.0.1

cpe:2.3:a:thephpleague:commonmark:2.0.1
Thephpleague » Commonmark » Version: 2.0.2

cpe:2.3:a:thephpleague:commonmark:2.0.2
Thephpleague » Commonmark » Version: 2.0.3

cpe:2.3:a:thephpleague:commonmark:2.0.3
Thephpleague » Commonmark » Version: 2.0.4

cpe:2.3:a:thephpleague:commonmark:2.0.4
Thephpleague » Commonmark » Version: 2.1.0

cpe:2.3:a:thephpleague:commonmark:2.1.0
Thephpleague » Commonmark » Version: 2.1.1

cpe:2.3:a:thephpleague:commonmark:2.1.1
Thephpleague » Commonmark » Version: 2.1.2

cpe:2.3:a:thephpleague:commonmark:2.1.2
Thephpleague » Commonmark » Version: 2.1.3

cpe:2.3:a:thephpleague:commonmark:2.1.3
Thephpleague » Commonmark » Version: 2.2.0

cpe:2.3:a:thephpleague:commonmark:2.2.0
Thephpleague » Commonmark » Version: 2.2.1

cpe:2.3:a:thephpleague:commonmark:2.2.1
Thephpleague » Commonmark » Version: 2.2.2

cpe:2.3:a:thephpleague:commonmark:2.2.2
Thephpleague » Commonmark » Version: 2.2.3

cpe:2.3:a:thephpleague:commonmark:2.2.3
Thephpleague » Commonmark » Version: 2.2.4

cpe:2.3:a:thephpleague:commonmark:2.2.4
Thephpleague » Commonmark » Version: 2.2.5

cpe:2.3:a:thephpleague:commonmark:2.2.5
Thephpleague » Commonmark » Version: 2.3.0

cpe:2.3:a:thephpleague:commonmark:2.3.0
Thephpleague » Commonmark » Version: 2.3.1

cpe:2.3:a:thephpleague:commonmark:2.3.1
Thephpleague » Commonmark » Version: 2.3.2

cpe:2.3:a:thephpleague:commonmark:2.3.2
Thephpleague » Commonmark » Version: 2.3.3

cpe:2.3:a:thephpleague:commonmark:2.3.3
Thephpleague » Commonmark » Version: 2.3.4

cpe:2.3:a:thephpleague:commonmark:2.3.4
Thephpleague » Commonmark » Version: 2.3.5

cpe:2.3:a:thephpleague:commonmark:2.3.5
Thephpleague » Commonmark » Version: 2.3.6

cpe:2.3:a:thephpleague:commonmark:2.3.6
Thephpleague » Commonmark » Version: 2.3.7

cpe:2.3:a:thephpleague:commonmark:2.3.7
Thephpleague » Commonmark » Version: 2.3.8

cpe:2.3:a:thephpleague:commonmark:2.3.8
Thephpleague » Commonmark » Version: 2.3.9

cpe:2.3:a:thephpleague:commonmark:2.3.9
Thephpleague » Commonmark » Version: 2.4.0

cpe:2.3:a:thephpleague:commonmark:2.4.0
Thephpleague » Commonmark » Version: 2.4.1

cpe:2.3:a:thephpleague:commonmark:2.4.1
Thephpleague » Commonmark » Version: 2.4.2

cpe:2.3:a:thephpleague:commonmark:2.4.2
Thephpleague » Commonmark » Version: 2.4.3

cpe:2.3:a:thephpleague:commonmark:2.4.3
Thephpleague » Commonmark » Version: 2.4.4

cpe:2.3:a:thephpleague:commonmark:2.4.4
Thephpleague » Commonmark » Version: 2.5.0

cpe:2.3:a:thephpleague:commonmark:2.5.0
Thephpleague » Commonmark » Version: 2.5.1

cpe:2.3:a:thephpleague:commonmark:2.5.1
Thephpleague » Commonmark » Version: 2.5.2

cpe:2.3:a:thephpleague:commonmark:2.5.2
Thephpleague » Commonmark » Version: 2.5.3

cpe:2.3:a:thephpleague:commonmark:2.5.3
Thephpleague » Commonmark » Version: 2.6.0

cpe:2.3:a:thephpleague:commonmark:2.6.0
Thephpleague » Commonmark » Version: 2.6.1

cpe:2.3:a:thephpleague:commonmark:2.6.1
Thephpleague » Commonmark » Version: 2.6.2

cpe:2.3:a:thephpleague:commonmark:2.6.2
Thephpleague » Commonmark » Version: 2.7.0

cpe:2.3:a:thephpleague:commonmark:2.7.0
Thephpleague » Commonmark » Version: 2.7.1

cpe:2.3:a:thephpleague:commonmark:2.7.1
Thephpleague » Commonmark » Version: 2.8.0

cpe:2.3:a:thephpleague:commonmark:2.8.0
Thephpleague » Commonmark » Version: 2.8.1

cpe:2.3:a:thephpleague:commonmark:2.8.1
Thephpleague » Commonmark » Version: 2.8.2

cpe:2.3:a:thephpleague:commonmark:2.8.2
Thephpleague » Commonmark » Version: 2.8.3

cpe:2.3:a:thephpleague:commonmark:2.8.3
Thephpleague » Commonmark » Version: 2.9.0

cpe:2.3:a:thephpleague:commonmark:2.9.0

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-86430

Products

Pricing

Contact Us