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8.5 High

CVE-2026-53803 rsync before 3.5.0 contains a symlink following vulnerability that allows local attackers to overwrite arbitrary files…

Description

rsync before 3.5.0 contains a symlink following vulnerability that allows local attackers to overwrite arbitrary files by placing a symlink at a predictable output path such as --log-file, --write-batch, or daemon-mode log and statistics paths. Attackers can exploit rsync's failure to reject symlinks during ancillary file writes to redirect output to arbitrary filesystem locations, achieving local privilege escalation on installations where rsync runs with elevated privileges such as setuid or privileged daemon configurations.

Affected products and versions

Product Affected versions Fixed in
rsync 3.5 earliest → < 3.5.0 3.5.0
rsync 3.4 earliest → 3.4.4 No fix stated

References

Timeline

  1. Published
  2. Last modified

Other CVEs of rsync

The 44 CVEs of rsync →
CVE-2026-119741 rsync < 3.5.2 Denial of Service via hash_search() Checksum Collisions 8.7 High CVE-2026-70452 rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to circumvent… 9.1 Critical CVE-2026-70453 rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote… 8.7 High CVE-2026-70454 rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation… 7.6 High
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