CVE-2026-70461rsync 3.2.5 < 3.5.0 Heap Out-of-Bounds Write via files-from Entry

Description

rsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of a heap allocation by supplying a crafted files-from entry. Attackers can trigger the vulnerability against a read-only rsync daemon module by providing a files-from entry containing both an interior and trailing backslash, causing the add_implied_include() function to under-count the trailing backslash when sizing the destination buffer.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• GitHub Security Advisory (GHSA-jhxm-j4mq-3fj4) vendor-advisoryVendor Advisory
• rsync 3.5.0 Release Notes release-notesProductRelease Notes
• https://www.vulncheck.com/advisories/rsync-heap-out-of-bounds-write-via-files-from-entry third-party-advisoryRelease NotesThird Party Advisory