CVE-2026-70454
published 2026-08-13CVE-2026-70454: rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation vulnerability that allows on-path…
PriorityP341high8CVSS 3.1
AVNACHPRNUIRSCCHIHAN
EPSS
0.19%
8.7th percentile
rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation vulnerability that allows on-path attackers to intercept encrypted sessions by presenting self-signed or otherwise invalid certificates. Attackers can exploit the failure to validate server TLS certificates against a trusted CA or verify certificate hostname matching to decrypt or tamper with rsync session content without detection by the client.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| rsyncproject | rsync | <= 3.4.4 | — |
| samba | rsync | — | — |
CVSS provenance
nvdv3.18.0HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
nvdv4.07.6HIGHCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat8.0HIGH
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Bugzilla
CVE-2026-70454 rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions [fedora-all]
bugzilla·2026-08-24·CVSS 8.0
CVE-2026-70454 [HIGH] CVE-2026-70454 rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions [fedora-all]
CVE-2026-70454 rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation vulnerability that allows on-path attackers to intercept encrypted sessions by presenting self-signed or otherwise invalid certificates. Attackers can exploit the failure to validate server TLS certificates against a trusted CA or verify certificate hostname matching to decrypt or tamper with rsync session content without detection b
Bugzilla
CVE-2026-70454 rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions
bugzilla·2026-08-13·CVSS 8.0
CVE-2026-70454 [HIGH] CVE-2026-70454 rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions
CVE-2026-70454 rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions
rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation vulnerability that allows on-path attackers to intercept encrypted sessions by presenting self-signed or otherwise invalid certificates. Attackers can exploit the failure to validate server TLS certificates against a trusted CA or verify certificate hostname matching to decrypt or tamper with rsync session content without detection by the client.
2026-08-13
Published