CVE-2026-8612— WWW::Mechanize::Cached 代码问题漏洞

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

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.

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关键资源的不正确权限授予

WWW::Mechanize::Cached 代码问题漏洞

WWW::Mechanize::Cached是libwww-perl开源的一个用于 Perl 语言的开源模块，作为 WWW::Mechanize 的扩展。 WWW::Mechanize::Cached 2.00之前版本存在代码问题漏洞，该漏洞源于从世界可写的磁盘缓存反序列化缓存的HTTP响应，本地攻击者可以替换受害者已知URL的缓存条目为任意冻结的HTTP::Response blob，导致受害者下次get()该URL时返回攻击者控制的响应字节，并通过Storable::thaw升级为任意代码执行。

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