# CVE-2026-31801: zot’s create-only policy allows overwrite attempts of existing latest tag (update permission not required)

Source: https://junglewise.ai/threats/cve-2026-31801-zot-s-create-only-policy-allows-overwrite-attempts-of-existing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-12  
License: CC BY 4.0 with a link back

CVE-2026-31801 · Severity: low · CVSS 3.1 · Published 2026-03-12

zot’s create-only policy allows overwrite attempts of existing latest tag (update permission not required) in zotregistry.dev/zot

Technologies: [zotregistry.dev/zot (Go)](https://junglewise.ai/threats/technologies/zotregistry-dev-zot). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2026-31801 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-31801 being exploited in the wild.

**How severe is CVE-2026-31801?** Low severity, with a CVSS score of 3.1, published 12 March 2026.

**Which products and versions are affected?** zotregistry.dev/zot (Go) SEMVER:introduced=0, SEMVER:introduced=1.3.0-20210831063041-c8779d9e87d9,last_affected=1.4.4-20251014054906-73eef25681af; zotregistry.dev/zot/v2 (Go) SEMVER:introduced=0,fixed=2.1.15.

**Is there a fix for CVE-2026-31801?** Yes. zotregistry.dev/zot/v2 (Go): upgrade to 2.1.15 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-31801?** Check whether you run zotregistry.dev/zot (Go) or zotregistry.dev/zot/v2 (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- zotregistry.dev/zot/v2 (Go): upgrade to 2.1.15 or later

  ```sh
  go get zotregistry.dev/zot/v2@v2.1.15
  ```


## Affected products

- zotregistry.dev/zot (Go) SEMVER:introduced=0, SEMVER:introduced=1.3.0-20210831063041-c8779d9e87d9,last_affected=1.4.4-20251014054906-73eef25681af
- zotregistry.dev/zot/v2 (Go) SEMVER:introduced=0,fixed=2.1.15

## Identifiers

- CVE-2026-31801
- GHSA-85jx-fm8m-x8c6
- GO-2026-4668

## Related threats

- [zot registry bearer authentication delete authorization bypass](https://junglewise.ai/threats/cve-2026-61833-zot-registry-bearer-authentication-delete-authorization-bypass)
- [GO-2025-3705 - zot logs secrets in zotregistry.dev/zot](https://junglewise.ai/threats/cve-2025-48374-zot-logs-secrets)
- [GO-2025-3409 - Zot IdP group membership revocation ignored in zotregistry.dev/zot](https://junglewise.ai/threats/cve-2025-23208-zot-idp-group-membership-revocation-ignored)
- [GO-2024-2979 - Cache driver GetBlob() allows read access to any blob without access control check in zotregistry.dev/zot](https://junglewise.ai/threats/cve-2024-39897-cache-driver-getblob-allows-read-access-to-any-blob-without)