# CVE-2026-70463: rsync: rsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing CVE-2026-70463 is fixed in 5 products on 1 platform, first by RHSA-2026:67463, released August 13, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-70463 - Priority: High - CVSS: 8.2 (important) - EPSS: 0.0036 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Aug 13, 2026 ## Description rsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when splitting the user list, which fails to correctly handle entries of the form @Group Name where the group name contains a space. The space within the group name causes the parser to split the entry at the space boundary, discarding the deny rule associated with the group. An authenticated user whose username or group membership would be denied by an @Group Name auth users entry can connect to a restricted module because the deny rule is silently discarded during parsing. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | rsync Debian 13.5 (trixie) | 3.5.0+ds1-0+deb13u1 | [DEBIAN-CVE-2026-70463](https://patchblox.com/security/data/fix/linux/debian-cve-2026-70463.md) | Aug 27, 2026 | | Linux | rsync Debian 14 | 3.5.0+ds1-1 | [DEBIAN-CVE-2026-70463](https://patchblox.com/security/data/fix/linux/debian-cve-2026-70463.md) | Aug 27, 2026 | | Linux | rsync RHEL 10 | 3.5.0-3.el10_2 | [RHSA-2026:67463](https://patchblox.com/security/data/fix/linux/rhsa-2026-67463.md) | Aug 13, 2026 | | Linux | rsync RHEL 8 | 0:3.1.3-28.el8_10 | [RHSA-2026:74095](https://patchblox.com/security/data/fix/linux/rhsa-2026-74095.md) | Oct 1, 2026 | | Linux | rsync RHEL 9 | 0:3.2.7-1.el9_8 | [RHSA-2026:67462](https://patchblox.com/security/data/fix/linux/rhsa-2026-67462.md) | Sep 19, 2026 | | Linux | rsync almalinux 10 | 3.5.0-3.el10_2 | [ALSA-2026:67463](https://patchblox.com/security/data/fix/linux/alsa-2026-67463.md) | Sep 14, 2026 | | Linux | rsync almalinux 8 | 3.1.3-28.el8_10 | [ALSA-2026:74095](https://patchblox.com/security/data/fix/linux/alsa-2026-74095.md) | Sep 30, 2026 | | Linux | rsync almalinux 9 | 3.2.7-1.el9_8 | [ALSA-2026:67462](https://patchblox.com/security/data/fix/linux/alsa-2026-67462.md) | Sep 14, 2026 | | Linux | rsync amzn 2023 | 3.5.1-1.amzn2023.0.1 | [ALAS2023-2026-3131](https://patchblox.com/security/data/fix/linux/alas2023-2026-3131.md) | Sep 28, 2026 | | Linux | rsync ol 10 | 0:3.5.0-3.el10_2 | [ELSA-2026-67463-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67463-0.md) | Sep 16, 2026 | | Linux | rsync ol 8 | 0:3.1.3-28.el8_10 | [ELSA-2026-74095](https://patchblox.com/security/data/fix/linux/elsa-2026-74095.md) | Oct 1, 2026 | | Linux | rsync ol 9 | 0:3.2.7-1.el9_8 | [ELSA-2026-67462-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67462-0.md) | Sep 16, 2026 | | Linux | rsync opensuse-leap 16.0 | 3.4.1-160000.6.1 | [OPENSUSE-SU-2026:21650-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21650-1.md) | Aug 26, 2026 | | Linux | rsync rocky 10 | 0:3.5.0-3.el10_2 | [RLSA-2026:67463](https://patchblox.com/security/data/fix/linux/rlsa-2026-67463.md) | Sep 15, 2026 | | Linux | rsync rocky 8 | 0:3.1.3-28.el8_10 | [RLSA-2026:74095](https://patchblox.com/security/data/fix/linux/rlsa-2026-74095.md) | Oct 1, 2026 | | Linux | rsync rocky 9 | 0:3.2.7-1.el9_8 | [RLSA-2026:67462](https://patchblox.com/security/data/fix/linux/rlsa-2026-67462.md) | Sep 15, 2026 | | Linux | rsync sles 15.6 | 3.2.7-150600.3.24.1 | [SUSE-SU-2026:3657-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3657-1.md) | Aug 20, 2026 | | Linux | rsync sles 15.7 | 3.2.7-150600.3.24.1 | [SUSE-SU-2026:3657-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3657-1.md) | Aug 20, 2026 | | Linux | rsync sles 16.0 | 3.4.1-160000.6.1 | [SUSE-SU-2026:23323-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23323-1.md) | Aug 26, 2026 | | Linux | rsync-daemon RHEL 8 | 0:3.1.3-28.el8_10 | [RHSA-2026:74095](https://patchblox.com/security/data/fix/linux/rhsa-2026-74095.md) | Oct 1, 2026 | | Linux | rsync-daemon RHEL 9 | 0:3.2.7-1.el9_8 | [RHSA-2026:67462](https://patchblox.com/security/data/fix/linux/rhsa-2026-67462.md) | Sep 19, 2026 | | Linux | rsync-daemon almalinux 10 | 3.5.0-3.el10_2 | [ALSA-2026:67463](https://patchblox.com/security/data/fix/linux/alsa-2026-67463.md) | Sep 14, 2026 | | Linux | rsync-daemon almalinux 8 | 3.1.3-28.el8_10 | [ALSA-2026:74095](https://patchblox.com/security/data/fix/linux/alsa-2026-74095.md) | Sep 30, 2026 | | Linux | rsync-daemon almalinux 9 | 3.2.7-1.el9_8 | [ALSA-2026:67462](https://patchblox.com/security/data/fix/linux/alsa-2026-67462.md) | Sep 14, 2026 | | Linux | rsync-daemon amzn 2023 | 3.5.1-1.amzn2023.0.1 | [ALAS2023-2026-3131](https://patchblox.com/security/data/fix/linux/alas2023-2026-3131.md) | Sep 28, 2026 | | Linux | rsync-daemon ol 10 | 0:3.5.0-3.el10_2 | [ELSA-2026-67463-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67463-0.md) | Sep 16, 2026 | | Linux | rsync-daemon ol 8 | 0:3.1.3-28.el8_10 | [ELSA-2026-74095](https://patchblox.com/security/data/fix/linux/elsa-2026-74095.md) | Oct 1, 2026 | | Linux | rsync-daemon ol 9 | 0:3.2.7-1.el9_8 | [ELSA-2026-67462-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67462-0.md) | Sep 16, 2026 | | Linux | rsync-debuginfo amzn 2023 | 3.5.1-1.amzn2023.0.1 | [ALAS2023-2026-3131](https://patchblox.com/security/data/fix/linux/alas2023-2026-3131.md) | Sep 28, 2026 | | Linux | rsync-debugsource amzn 2023 | 3.5.1-1.amzn2023.0.1 | [ALAS2023-2026-3131](https://patchblox.com/security/data/fix/linux/alas2023-2026-3131.md) | Sep 28, 2026 | | Linux | rsync-rrsync RHEL 9 | 0:3.2.7-1.el9_8 | [RHSA-2026:67462](https://patchblox.com/security/data/fix/linux/rhsa-2026-67462.md) | Sep 19, 2026 | | Linux | rsync-rrsync almalinux 10 | 3.5.0-3.el10_2 | [ALSA-2026:67463](https://patchblox.com/security/data/fix/linux/alsa-2026-67463.md) | Sep 14, 2026 | | Linux | rsync-rrsync almalinux 9 | 3.2.7-1.el9_8 | [ALSA-2026:67462](https://patchblox.com/security/data/fix/linux/alsa-2026-67462.md) | Sep 14, 2026 | | Linux | rsync-rrsync ol 10 | 0:3.5.0-3.el10_2 | [ELSA-2026-67463-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67463-0.md) | Sep 16, 2026 | | Linux | rsync-rrsync ol 9 | 0:3.2.7-1.el9_8 | [ELSA-2026-67462-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67462-0.md) | Sep 16, 2026 | --- Data as of 2026-11-08T06:59:42Z UTC. 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