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CVE-2026-35172

Distribution broken access control

7.5 HIGHPublic exploitEPSS 0.67%
  1. Published6 Apr 2026

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Distribution< 3.1.0

Remediation

Fixed in
Distribution≥ 3.1.0

References

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Frequently asked

Is CVE-2026-35172 being actively exploited?

CVE-2026-35172 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.67%.

How severe is CVE-2026-35172?

CVE-2026-35172 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.67% probability of exploitation.

Which products are affected by CVE-2026-35172?

Affected products include Distribution.

How do I fix CVE-2026-35172?

Upgrade affected software to a fixed version, for example Distribution 3.1.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-35172 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.