CVE-2026-4177 (GCVE-0-2026-4177)

Vulnerability from cvelistv5 – Published: 2026-03-16 22:30 – Updated: 2026-03-17 01:34
VLAI?
Title
YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML emitter
Summary
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 ?
No CVSS data available.
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
Impacted products
Vendor Product Version
TODDR YAML::Syck Affected: 0 , ≤ 1.36 (custom)
Create a notification for this product.
Credits
Todd Rinaldo
Show details on NVD website

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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