PT-2026-129197

CVE-2026-118694

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Published

2026-10-28

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Updated

2026-10-28

Description by

CVSS 3.1
7.5
High
MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
python-markdown2 through 2.5.5 contains a denial of service vulnerability that allows remote users to exhaust CPU by submitting Markdown with unclosed inline link destinations. Attackers can submit repeated '[a](' or '![a](' sequences, causing find balanced to rescan the remaining document for each link and consume quadratic CPU time.
Exploitability
Fix
Researchers
Vendors
Affected products
Weakness enumeration
CWE-407: Inefficient Algorithmic Complexity
Related identifiers
CVE-2026-118694
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