CVE-2026-64617: Data::PubSub::Shared 0 to before 0.07

Affected technology

Data::PubSub::Shared · 0 to before 0.07
EGOR

Description’s affected range: versions before 0.07 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW

Component: Not specified by the source
File: pubsub.h

Attack conditions (Source advisory, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Where any local user can read the IPC payloads stored in the world-readable segment, and a pre-planted file or symlink at the path lets a local attacker win a pre-creation race or redirect the open. Source advisory’s CVSS 3.1 assessment (base score 3.8/10) rates confidentiality impact as low; integrity and availability impact as none.