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0 CVE-2026-4177 is a critical heap-based buffer overflow vulnerability in YAML::Syck versions through 1.36 for Perl. The flaw occurs when class names exceed the initial 512-byte allocation in the YAML emitter. Additional issues include a base64 decoder reading past buffer ends on trailing newlines, corruption of shared node data due to strtok mutating type IDs, and a memory leak when adding anchors to nodes that already have one. Red Hat has issued security advisories and updates addressing these vulnerabilities. Join the discussion | GCVE Database | 03/16/2026, 22:30:25 UTC Added: 06/27/2026, 22:08:23 UTC |
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