CVE
DEBIAN-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.
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->typeid in place, corrupting shared node data. A memory leak occurred in syckhdlraddanchor when a node already had an anchor. The incoming anchor string 'a' was leaked on early return.
Package Versions Affected
Package Version
patch Availability
No items found.
Automatically patch vulnerabilities without upgrading
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CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
-
C
H
U
0
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3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
C
H
U
-
Related Resources
No items found.
References
https://security-tracker.debian.org/tracker/CVE-2026-4177
Basic Information
Ecosystem
