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  4. CVE 2026 119128 zitadel 400 before 4195 login v2 account takeover
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Back to active CVEs
Critical · CVSS 9.1CVE-2026-119128

ZITADEL 4.0.0 before 4.19.5 Login V2 Account Takeover via Forgeable verificationCheck CookieCVE-2026-119128

Answer in brief

CVE-2026-119128 records a Critical severity (CVSS 9.1) vulnerability in ZITADEL 4.0.0 before 4.19.5 Login V2 Account Takeover via Forgeable verificationCheck Cookie. The current sources do not mark it as known exploited. The current feed maps zitadel/zitadel (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 29, 2026Updated Oct 29, 2026Source checked Oct 29, 2026First seen by HOL Oct 29, 2026Material review Oct 29, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps zitadel/zitadel (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
zitadel/zitadelgeneric>=4.0.0 <4.19.54.19.5

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for zitadel/zitadel.
  2. 2Review the reported fix. Update zitadel/zitadel to 4.19.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 29, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

ZITADEL 4.0.0 before 4.19.5 contains an authentication bypass vulnerability in the Login V2 UI that allows unauthenticated attackers to set the first credential of users lacking any authentication method. Attackers can compute a valid verificationCheck cookie from the user ID and browser fingerprint to set a password, register a passkey, or link an identity provider, taking over the account.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-565
Source
CVE List V5
Source checked
Oct 29, 2026
References
2 linked sources
Open source record