CVE-2026-53784

Description

rsync before 3.5.0 contains a path traversal vulnerability that allows remote clients to access files outside the intended module root when use chroot is disabled and the module root path or a component of it is a symlink. The daemon calls chdir() to the module root at session initialization without resolving symlinks via realpath() or equivalent, causing subsequent relative-path operations to reference files relative to the symlink target rather than the intended module root, enabling unauthorized file access.

Weakness classification

• disclosure@vulncheck.com: CWE-59

Primary references

• disclosure@vulncheck.com — Product, Release Notes
• disclosure@vulncheck.com — Vendor Advisory
• disclosure@vulncheck.com — Release Notes, Third Party Advisory