Bug 2515381 (CVE-2026-53803) - CVE-2026-53803 rsync: rsync: Local Privilege Escalation via Symlink Following
Summary: CVE-2026-53803 rsync: rsync: Local Privilege Escalation via Symlink Following
Keywords:
Status: NEW
Alias: CVE-2026-53803
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2519548 2519549 2519547
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-13 15:50 UTC by OSIDB Bzimport
Modified: 2026-08-26 12:18 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-08-13 15:50:59 UTC
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.


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