How severe is CVE-2026-35172?

CVE-2026-35172 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-35172 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35172?

CVE-2026-35172 affects Distribution. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35172?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-35172 have an EU (EUVD) identifier?

Yes. CVE-2026-35172 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19446.

When was CVE-2026-35172 published?

CVE-2026-35172 was published on 2026-04-06 and last updated on 2026-07-02.

CVE-2026-35172

CVE-2026-35172 is a high-severity vulnerability in Distribution with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19446
Weakness: CWE-284
Affected product: Distribution
Published: 2026-04-06
Last modified: 2026-07-02

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.

Frequently asked questions

What is CVE-2026-35172?: 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.
How severe is CVE-2026-35172?: CVE-2026-35172 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-35172 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35172?: CVE-2026-35172 affects Distribution. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35172?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-35172 have an EU (EUVD) identifier?: Yes. CVE-2026-35172 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19446.
When was CVE-2026-35172 published?: CVE-2026-35172 was published on 2026-04-06 and last updated on 2026-07-02.

References

Affected products (1)

cpe:2.3:a:distribution:distribution:*:*:*:*:*:*:*:*

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