CVE-2026-86432 (GCVE-0-2026-86432)
Vulnerability from cvelistv5
Published
2026-09-07 12:53
Modified
2026-10-08 15:25
Severity ?
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-405 - Asymmetric Resource Consumption (Amplification)
Summary
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. Attackers can provide deeply nested Markdown or AST structures to cause quadratic memory consumption and output amplification, exhausting server resources.
References
Impacted products
Vendor Product Version
thephpleague commonmark Version: 2.0.0   ≤
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