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CVE-2026-35172— Distribution has stale blob access resurrection via repo-scoped redis descriptor cache invalidation

Quick assessment

Affected
distribution distribution
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Distribution是Distribution开源的用于打包、运输、存储和交付内容的工具集。 Distribution 3.1.0之前版本存在访问控制错误漏洞，该漏洞源于在特定配置下删除操作后可能恢复存储库的读取访问权限。

CVSS 7.5 · High EPSS 0.67% · P50

Possible ATT&CK Techniques 1 AI

T1565 · Data Manipulation

Affected Version Matrix 1

VendorProduct Version RangeStatus
distribution distribution < 3.1.0 affected
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I. Basic Information for CVE-2026-35172

Vulnerability Information
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Vulnerability Title
Distribution has stale blob access resurrection via repo-scoped redis descriptor cache invalidation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Distribution 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Distribution是Distribution开源的用于打包、运输、存储和交付内容的工具集。 Distribution 3.1.0之前版本存在访问控制错误漏洞，该漏洞源于在特定配置下删除操作后可能恢复存储库的读取访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
distribution distribution < 3.1.0 -

II. Public POCs for CVE-2026-35172

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III. Intelligence Information for CVE-2026-35172

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Vendor Advisories for CVE-2026-35172 (1)

IV. Related Vulnerabilities

Same product: distribution
Same vendor: distribution
Same weakness: CWE-284

V. Comments for CVE-2026-35172

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