CVE-2026-4177 - YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML emitter

CVE-2026-4177 - YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML emitter

https://cvefeed.io/rssfeed/latest.atom / Tue, 03/17/2026 - 05:07
CVE ID :CVE-2026-4177
Published : March 16, 2026, 11:16 p.m. | 3 hours, 14 minutes ago
Description :YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML emitter. The heap overflow occurs when class names exceed the initial 512-byte allocation. The base64 decoder could read past the buffer end on trailing newlines. strtok mutated n->type_id in place, corrupting shared node data. A memory leak occurred in syck_hdlr_add_anchor when a node already had an anchor. The incoming anchor string 'a' was leaked on early return.
Severity: 0.0 | NA
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