UBUNTU-CVE-2026-57077

YAML::Syck versions before 1.47 for Perl allow an out-of-bounds read via an unbounded newline scan in newlinelen. In the bundled libsyck newlinelen and isnewline dereference the scan pointer, and the following byte for a "\r\n" pair, with no NUL-terminator or bounds check. During block-scalar...

CVE-2026-13713

CVE-2026-13713 affects YAML::Syck versions before 1.47 (Perl). A use-after-free and double-free occurs when an anchor is redefined while still on the parser value stack, due to how syck_hdlr_add_anchor and syck_hdlr_remove_anchor free the node. The freed node may still be live on the value stack,...

MGASA-2026-0148 Updated perl-YAML-Syck package fixes security vulnerability

YAML::Syck versions before 1.38 for Perl have an out-of-bounds read...

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

Multiple security issues have been discovered in the perl YAML::Syck module. A heap overflow occurs when class names exceed the initial 512-byte allocation, a base64 decoder could read past the buffer end on trailing newlines. strtok mutated n-typeid in place, corrupting shared node data, and a...

UBUNTU-CVE-2018-13043

scripts/grep-excuses.pl in Debian devscripts through 2.18.3 allows code execution through unsafe YAML loading because YAML::Syck is used without a configuration that prevents unintended blessing...