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CVE-2026-86432

commonmark 2.0.0 before 2.8.4 Denial of Service via XML PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
thephpleague / commonmarkaffected 2.0.0 before 2.8.4; unaffected 2.8.4

CWE

CWE-405

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.