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CVE-2026-118694

8.7 high Published
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 2

  1. StatusReceived → PublishedNVD modified 2026-10-28 21:11
  2. First seenCVSS 8.7NVD modified 2026-10-28 22:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 6