PT-2026-25828 · Toddr · Yaml::Syck
Todd Rinaldo
·
Published
2026-03-16
·
Updated
2026-03-16
·
CVE-2026-4177
None
No severity ratings or metrics are available. When they are, we'll update the corresponding info on the page.
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.
Heap Based Buffer Overflow
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Yaml::Syck