CVE-2026-88753

EUVD-2026-102186
A Regular-Expression Denial of Service (ReDoS) in the Markdown2. extract_metadata() function (lib/markdown2.py) of trentm markdown2 through v2.5.5 allows attackers to cause a Denial of Service (DoS) via a crafted Markdown document.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
UNKNOWN
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
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Debian Releases
Debian Product
Codename
python-markdown2
bookworm
vulnerable
forky
vulnerable
sid
vulnerable
trixie
vulnerable
References
https://gist.github.com/NanaSec/354b4188bbd7f4105008c7b8be49b0ba