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thephpleague

Records21All Threatist records
Exploited (KEV)0None in CISA KEV
CVSS critical1CVSS 9.0–10.0
CVSS high10CVSS 7.0–8.9

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21 records

Priority HIGH 77

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart() block-start scan.

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00368 Published 2026-10-08 Fixed in 2.10.2 CWE-400
Priority MEDIUM 57

League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name.

CVSS 4.0MEDIUM 5.3 Network No auth User interaction EPSS 0.0025 Published 2026-10-08 No fix listed CWE-80
Priority MEDIUM 44

commonmark versions from 1.5.0 before 2.8.4 contain a denial of service vulnerability in the Footnote extension that fails to deduplicate footnote definitions.

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00488 Published 2026-09-07 Fixed in 2.8.4 CWE-407
Priority MEDIUM 44

league/commonmark versions >= 2.0.0 and < 2.8.4 (patched in 2.9.0) contain a denial of service vulnerability in UniqueSlugNormalizer::normalize(), which restarts its numeric-suffix search from 1 on every slug collision,…

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00509 Published 2026-09-07 Fixed in 2.8.4 CWE-407
Priority MEDIUM 44

commonmark versions from 1.5.0 before 2.8.4 contain a denial of service vulnerability in the Attributes extension where AttributesListener::findTargetAndDirection() performs quadratic-time sibling list scanning.

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00509 Published 2026-09-07 Fixed in 2.8.4 CWE-407
Priority MEDIUM 44

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…

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00493 Published 2026-09-07 Fixed in 2.9.1 CWE-407
Priority MEDIUM 44

The league/commonmark (thephpleague/commonmark) library in versions >= 1.5.0 and < 2.9.1 contains quadratic parsing complexity in its SmartPunctExtension and AttributesExtension.

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00515 Published 2026-09-07 Fixed in 2.9.1 CWE-407
Priority MEDIUM 44

commonmark versions from 1.5.0 before 2.10.0 contain a denial of service vulnerability in the AttributesExtension when processing distinctly-named attributes.

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00493 Published 2026-09-07 Fixed in 2.10.0 CWE-407
Priority LOW 37

commonmark versions from 2.0.0 before 2.8.4 contain a denial of service vulnerability in XmlRenderer that emits depth-proportional indentation for every XML tag.

CVSS 4.0MEDIUM 6.9 Network No auth No interaction EPSS 0.00418 Published 2026-09-07 Fixed in 2.8.4 CWE-405
Priority LOW 31

Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library versions 0.15.6 through 0.18.x before 0.18.1 allows remote attackers to insert unsafe URLs into HTML (even if allow_unsafe_links is false) via…

CVSS 3.0MEDIUM 6.1 Network No auth User interaction EPSS 0.01863 Published 2018-12-30 Fixed in 0.18.1 CWE-79
Priority LOW 29

Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library before 0.18.3 allows remote attackers to insert unsafe links into HTML by using double-encoded HTML entities that are not properly escaped dur…

CVSS 3.0MEDIUM 6.1 Network No auth User interaction EPSS 0.0105 Published 2019-03-24 Fixed in 0.18.3 CWE-79
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