CVE-2026-45232: low-severity vulnerability in RsyncProject rsync
Rsync < 3.4.3 Off-by-One Stack Write via HTTP Proxy
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.1epss 0.3%
Rsync versions before 3.4.3 contain an off-by-one out-of-bounds stack write vulnerability in the establish_proxy_connection() function in socket.c that allows network attackers to corrupt stack memory by sending a malformed HTTP proxy response. Attackers can exploit this by positioning themselves between the client and proxy or controlling the proxy server to send a response line of 1023 or more bytes without a newline terminator, causing a null byte to be written to an out-of-bounds stack address when the RSYNC_PROXY environment variable is set.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
RsyncProject · rsyncRelated CVEs — RsyncProject rsync
In the same product, most dangerous first.
CVE-2026-43618MEDIUMRsync < 3.4.3 Integer Overflow Information DisclosureEPSS 0.8%CVE-2026-70459MEDIUMrsync 3.0.0 < 3.5.0 Daemon Crash via Malformed File List EntryEPSS 0.7%CVE-2026-70464HIGHrsync 2.0.0 < 3.5.0 Connection Slot Exhaustion DoS via Handshake StallEPSS 0.6%CVE-2026-53790CRITICALrsync < 3.5.0 Command Injection via Multiple Code PathsEPSS 0.6%CVE-2026-119741HIGHrsync < 3.5.2 Denial of Service via hash_search() Checksum CollisionsEPSS 0.6%CVE-2026-70453HIGHrsync < 3.5.0 Algorithmic Complexity DoS via hash_search()EPSS 0.6%