CVE-2026-35172
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS — probability of exploitation (30 days)
0.7%
49.8th percentile
CISA KEV
Not listed
Weakness / dates
CWE-524
Published 2026-04-06 · modified 2026-09-09
Description
Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, distribution can restore read access in repo a after an explicit delete when storage.cache.blobdescriptor: redis and storage.delete.enabled: true are both enabled. The delete path clears the shared digest descriptor but leaves stale repo-scoped membership behind, so a later Stat or Get from repo b repopulates the shared descriptor and makes the deleted blob readable from repo a again. This vulnerability is fixed in 3.1.0.
Affected
References
- exploit https://github.com/distribution/distribution/security/advisories/GHSA-f2g3-hh2r-cwgc
- https://access.redhat.com/errata/RHSA-2026:23234
- https://access.redhat.com/errata/RHSA-2026:25045
- https://access.redhat.com/errata/RHSA-2026:26529
- https://access.redhat.com/errata/RHSA-2026:26543
- https://access.redhat.com/errata/RHSA-2026:28893
- https://access.redhat.com/errata/RHSA-2026:37387
- https://access.redhat.com/security/cve/CVE-2026-35172
- https://bugzilla.redhat.com/show_bug.cgi?id=2455571
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35172.json