======================================================================== CVE-2026-17435 CPAN Security Group ======================================================================== CVE ID: CVE-2026-17435 Distribution: File-Rotate-Simple Versions: before 0.4.0 MetaCPAN: https://metacpan.org/dist/File-Rotate-Simple VCS Repo: https://github.com/robrwo/File-Rotate-Simple File::Rotate::Simple versions before 0.4.0 for Perl create the target of dangling symlinks when rotating files Description ----------- File::Rotate::Simple versions before 0.4.0 for Perl create the target of dangling symlinks when rotating files. When the file to be rotated is a symbolic link to a missing file, and the touch option is enabled, then the rotate method assumes that the file is absent (since the existence check is against the target), and does not rotate it. But it touches the file, which creates the target. An attacker that has the ability to create the symlink can use this to create an arbitrary file with permissions of the process rotating the files (which may be different from the process that normally writes to the log file that is being rotated). Note that the touch option is disabled by default. Problem types ------------- - CWE-59 Improper Link Resolution Before File Access ('Link Following') Workarounds ----------- For deployments that cannot be upgraded, ensure the touch option is disabled. Solutions --------- Upgrade to version 0.4.0 or later. References ---------- https://github.com/robrwo/File-Rotate-Simple/commit/ead3f5c0e51217b34d286aa243949dba60b39eba.patch https://github.com/robrwo/File-Rotate-Simple/security/advisories/GHSA-fpmm-8f6h-wv74 https://metacpan.org/release/RRWO/File-Rotate-Simple-v0.4.0/changes
