CVE-2026-70463
highpriority · track · 10OT risk · elevatedEPSS 0.004 · 30 %ileexploit · PoCDEEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- Fyyre/CVE-2026-70463Testing CVE-2026-70463 by FyyrePoC · poc_in_github
affected products (17)
Products and version ranges known to be affected.
- Red Hat OpenShift Container Platformall versionscert_bundDEcpe:/a:redhat:openshift:container_platform
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2817Rsync: Mehrere SchwachstellenDeutsch2026-08-12csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Rsync ausnutzen, um seine Privilegien zu erhöhen, beliebigen Code auszuführen, Daten offenzulegen oder zu manipulieren, Sicherheitsmaßnahmen zu umgehen oder Denial-of-Service-Zustände herbeizuführen.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://github.com/RsyncProject/rsync/releases/Patchcnnvd
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0cnnvd
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-pfj8-79vq-xgvrcnnvd
- https://www.vulncheck.com/advisories/rsync-authorization-bypass-via-auth-users-directive-parsingcnnvd
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0enisa_euvd
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-pfj8-79vq-xgvrenisa_euvd
- https://www.vulncheck.com/advisories/rsync-authorization-bypass-via-auth-users-directive-parsingenisa_euvd
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0ProductRelease Notesnvd
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