YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read The issue is seen with complex YAML files with a hash of all keys and empty values.  There is no indication that the issue leads to accessing memory outside that allocated to the module.
History

Fri, 17 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 16 Oct 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 16 Oct 2025 00:45:00 +0000

Type Values Removed Values Added
Description YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read The issue is seen with complex YAML files with a hash of all keys and empty values.  There is no indication that the issue leads to accessing memory outside that allocated to the module.
Title YAML::Syck versions before 1.36 for Perl has missing Null-Terminators which causes Out-of-Bounds Read and potential Information Disclosure
Weaknesses CWE-119
References

cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published: 2025-10-16T00:14:41.769Z

Updated: 2025-10-16T13:42:17.584Z

Reserved: 2025-10-13T12:35:07.822Z

Link: CVE-2025-11683

cve-icon Vulnrichment

Updated: 2025-10-16T13:42:05.706Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-16T01:15:32.890

Modified: 2025-10-16T15:28:59.610

Link: CVE-2025-11683

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-16T00:14:41Z

Links: CVE-2025-11683 - Bugzilla