CVE-2026-35172

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.

CVSS Metrics

• v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Trends

Current EPSS score: 0.06%• Percentile: 19%

Techniques & Countermeasures

• CWE-284•Improper Access Control

  The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Systems

• distribution•distribution

  < 3.1.0

• github.com/distribution•distribution

  ≤ 2.8.3

• github.com/distribution/distribution•v3

  < 3.1.0

References (4)

• https://github.com/distribution/distribution/security/advisories/GHSA-f2g3-hh2r-cwgc
• https://github.com/distribution/distribution/commit/078b0783f239b4115d1a979e66f08832084e9d1d
• https://github.com/distribution/distribution
• https://nvd.nist.gov/vuln/detail/CVE-2026-35172