CVE-2026-5089
perl-YAML-Syck: perl-YAML-Syck: Information disclosure via out-of-bounds read in base60 parsing
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 13, 2026
Updated · June 28, 2026
Description
A flaw was found in perl-YAML-Syck. The base60 (sexagesimal) parsing code in perl_syck.h contains a buffer underflow vulnerability. When processing specially crafted colon-separated values, an attacker could cause the parser to read one byte before the allocated buffer. This out-of-bounds read may lead to information disclosure.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE-125 · Out-of-bounds Read