No VulnCrest analysis published for this CVE yet. Below is the original CNA/NVD description, unmodified.
Description
rsync before 3.5.2 contains a denial of service vulnerability in the delta-transfer sender's hash_search() in match.c that allows malicious receivers to trigger unbounded strong-checksum work at consecutive offsets. Unauthenticated attackers pulling from a public daemon module can supply weak checksums colliding with consecutive rolling windows plus non-matching strong checksums, exhausting sender CPU across concurrent connections.
Exploits & detection
No public PoC or detection template found yet.
Timeline
- Published: 03 Nov 2026
- Last modified upstream: 04 Nov 2026
Sources & licenses
- CVE / CVSS / CWE
- NVD record ↗ (unmodified). This product uses the NVD API but is not endorsed or certified by the NVD. CVE® © The MITRE Corporation.
- Exploitation
- CISA KEV (CC0) · EPSS by FIRST.org
- References used for the analysis
- https://github.com/RsyncProject/rsync/blob/a7404a9a633cff28ee1602f328b9c3fa69cdbd04/testsuite/hashsearch-collision-skip_test.py (Patch)
- https://github.com/RsyncProject/rsync/commit/a7404a9a633cff28ee1602f328b9c3fa69cdbd04 (Patch)
- https://github.com/RsyncProject/rsync/pull/1132 (Issue Tracking, Patch)
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.2
- https://www.vulncheck.com/advisories/rsync-through-3.5.1-denial-of-service-via-hash-search-checksum-collisions (Third Party Advisory)
- Analysis, summary and remediation
- © VulnCrest