Thephpleague: >> Commonmark >> 2.9.2 Security Vulnerabilities
commonmark versions from 1.5.0 before 2.10.0 contain a denial of service vulnerability in the AttributesExtension when processing distinctly-named attributes. Attackers can submit Markdown with numerous distinct attribute names to cause quadratic-time attribute merging and filtering, consuming disproportionate CPU resources and preventing legitimate requests from completing.
CVSS Score
8.7
EPSS Score
0.003
Published
2026-09-07