CVE-2026-8612 Affecting perl-www-mechanize-cached package, versions <2.00-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE323-PERLWWWMECHANIZECACHED-17112129
- published31 May 2026
- disclosed15 May 2026
Introduced: 15 May 2026
NewCVE-2026-8612 (opens in a new tab)How to fix?
Upgrade Alpine:3.23 perl-www-mechanize-cached to version 2.00-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perl-www-mechanize-cached package and not the perl-www-mechanize-cached package as distributed by Alpine.
See How to fix? for Alpine:3.23 relevant fixed versions and status.
WWW::Mechanize::Cached versions before 2.00 for Perl deserialize cached HTTP responses from a world-writable on-disk cache, enabling local response forgery and code execution.
With no explicit cache backend, WWW::Mechanize::Cached constructs a default Cache::FileCache under /tmp/FileCache without overriding the backend's documented directory_umask of 000, so the cache root and its subdirectories are created mode 0777 with no sticky bit. Cache entries are named by sha1_hex of the request and read back through Storable::thaw on the next cache hit.
A local attacker with write access to the cache tree can replace a victim's cache entry for a known URL with an arbitrary frozen HTTP::Response blob, causing the victim's next get() of that URL to return attacker controlled response bytes. Because the bytes are passed to Storable::thaw, a victim process that has loaded any class with a side-effectful STORABLE_thaw, DESTROY, or overload hook can be escalated to arbitrary code execution.