Vulnerability in github.com/zitadel/zitadel (CVE-2026-55669)
Summary
Vulnerability in github.com/zitadel/zitadel (CVE-2026-55669). Risk of unauthorized operations or information disclosure. Exploitable via iss. Mitigation: upgrade to 1.80.0-v2.20.0.20260615132747-d184e976fc79 or later.
Original description
The description as published by the source.
ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's external JWT Identity Provider validates a token's signature and issuer (iss) but not the audience (aud) claim, allowing a validly signed token from a trusted issuer for another relying party to be accepted by ZITADEL. This issue is fixed in versions 3.4.12 and 4.15.2.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-55669 has been found in github.com/zitadel/zitadel.
Attackers can target a specific entry point like iss over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 4.2/10.
What to do: upgrade github.com/zitadel/zitadel to 1.80.0-v2.20.0.20260615132747-d184e976fc79 or later.
If unsure, ask your IT team or search "github.com/zitadel/zitadel CVE-2026-55669" on the vendor's site.
CVE-2026-55669 (github.com/zitadel/zitadel) — CWE-346 / CVSS v3 4.2
Attack vector: remote (network-reachable) / no user interaction
Attack surface: iss / aud
Patched: 1.80.0-v2.20.0.20260615132747-d184e976fc79 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-346) exists in github.com/zitadel/zitadel. Attackers reach the vulnerable code path via iss.
Check the vendor advisory for the affected versions of github.com/zitadel/zitadel. Attack surface: iss / aud.
Severity: Medium (CVSS 4.2/10). Risk of unauthorized operations or information disclosure.
Update to 1.80.0-v2.20.0.20260615132747-d184e976fc79.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/zitadel/zitadel' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'github.com/zitadel/zitadel' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
github.com/zitadel/zitadelを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade github.com/zitadel/zitadel to 1.80.0-v2.20.0.20260615132747-d184e976fc79ステージング環境で 1.80.0-v2.20.0.20260615132747-d184e976fc79 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- web github.com
- web github.com
- web github.com
- web github.com