CVE-2017-20285
criticalYAML versions before 1.30 for Perl allow a loaded document to trigger the DESTROY method of arbitrary classes.
YAML versions before 1.30 for Perl allow a loaded document to trigger the DESTROY method of arbitrary classes. A perl/hash:Class tag blesses a hash into the class it names. The document supplies the object's fields, and Perl calls DESTROY when it goes out of scope. What DESTROY does depends on the classes the process has loaded. With File::Temp::Dir from core Perl, it can delete a directory tree the document names.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/ingydotnet/yaml-pm/commit/471314bbdcbd62077eea32755929122aa8bd00a3.patc... 9b29abf9-4ab0-4765-b253-1875cd9b441e
- https://github.com/ingydotnet/yaml-pm/commit/7736f38bd02e4f9f77d5468721e3be3d7b34a8ec.patc... 9b29abf9-4ab0-4765-b253-1875cd9b441e
- https://github.com/ingydotnet/yaml-pm/issues/176 9b29abf9-4ab0-4765-b253-1875cd9b441e
- https://metacpan.org/release/TINITA/YAML-1.30/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e
- http://www.openwall.com/lists/oss-security/2026/10/05/8 af854a3a-2127-422b-91ae-364da2661108