CVE-2026-29067: ZITADEL Vulnerable to Account Takeover Due to Improper Instance Validation in V2 Login

CVE-2026-29067 · Severity: low · CVSS 3.1 · Published 2025-12-15

ZITADEL Vulnerable to Account Takeover Due to Improper Instance Validation in V2 Login in github.com/zitadel/zitadel

Technologies: github.com/zitadel/zitadel (Go), github.com/zitadel/zitadel/v2 (Go). Vendors: Go.

Quick answers

Is CVE-2026-29067 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-29067 being exploited in the wild.
How severe is CVE-2026-29067?
Low severity, with a CVSS score of 3.1, published 15 December 2025.
Which products and versions are affected?
github.com/zitadel/zitadel (Go) SEMVER:introduced=0,fixed=1.80.0-v2.20.0.20251208091519-4c879b47334e, SEMVER:introduced=0,fixed=1.80.0-v2.20.0.20251208091519-4c879b47334e,introduced=1.83.4; github.com/zitadel/zitadel/v2 (Go) SEMVER:introduced=0,fixed=1.80.0-v2.20.0.20251208091519-4c879b47334e.
Is there a fix for CVE-2026-29067?
Yes. github.com/zitadel/zitadel (Go): upgrade to 1.80.0-v2.20.0.20251208091519-4c879b47334e or later; github.com/zitadel/zitadel/v2 (Go): upgrade to 1.80.0-v2.20.0.20251208091519-4c879b47334e or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-29067?
Check whether you run github.com/zitadel/zitadel (Go) or github.com/zitadel/zitadel/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

  • github.com/zitadel/zitadel (Go): upgrade to 1.80.0-v2.20.0.20251208091519-4c879b47334e or later
    go get github.com/zitadel/zitadel@v1.80.0-v2.20.0.20251208091519-4c879b47334e
  • github.com/zitadel/zitadel/v2 (Go): upgrade to 1.80.0-v2.20.0.20251208091519-4c879b47334e or later
    go get github.com/zitadel/zitadel/v2@v1.80.0-v2.20.0.20251208091519-4c879b47334e

Affected products

  • github.com/zitadel/zitadel (Go) SEMVER:introduced=0,fixed=1.80.0-v2.20.0.20251208091519-4c879b47334e, SEMVER:introduced=0,fixed=1.80.0-v2.20.0.20251208091519-4c879b47334e,introduced=1.83.4
  • github.com/zitadel/zitadel/v2 (Go) SEMVER:introduced=0,fixed=1.80.0-v2.20.0.20251208091519-4c879b47334e

Identifiers

  • CVE-2026-29067
  • GHSA-pfrf-9r5f-73f5
  • GO-2025-4212

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