YAML::Syck versions before 1.36 for Perl has missing Null-Terminators which...

6.5 / 10

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Basic Information

ID CVE-2025-11683

Source CPANSec

Published Oct 16, 2025 at 00:14

Modified Oct 16, 2025 at 13:42

Affected Product

Vendor TODDR

Product YAML::Syck

Affected Versions TODDR YAML::Syck 0

CWE Classification

CWE-119

References

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    "published": "2025-10-16T00:14:41.769Z",
    "modified": "2025-10-16T13:42:17.584Z",
    "type": "cve",
    "title": "YAML::Syck versions before 1.36 for Perl has missing Null-Terminators which causes Out-of-Bounds Read and potential Information Disclosure",
    "source": "CPANSec",
    "references": "https://github.com/cpan-authors/YAML-Syck/pull/65\nhttps://metacpan.org/dist/YAML-Syck/changes",
    "id": "CVE-2025-11683",
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YAML::Syck versions before 1.36 for Perl has missing Null-Terminators which causes Out-of-Bounds Read and potential Information Disclosure_CVE-2025-11683