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CVE-2026-45232 (GCVE-0-2026-45232)

Vulnerability from cvelistv5 – Published: 2026-05-20 00:45 – Updated: 2026-07-14 21:32 X_Open Source
VLAI
Title
Rsync < 3.4.3 Off-by-One Stack Write via HTTP Proxy
Summary
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-20 17:30 UTC
CWE
Impacted products
Vendor Product Version CPE status
RsyncProject rsync Affected: 0 , < 3.4.3 (semver)
    cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-05-19 00:00
Show details on NVD website

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