CVE-2026-55669

MEDIUMPre-NVD 4.24.2—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 95% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
4.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
4.2
EG Score
4.2(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity42% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

June 18, 2026

Last Modified

July 10, 2026

Advisory Details (3)

Auto-updated Jul 10, 2026
Patch available. Sources: github_release, github.
github Patch Available

Missing Token Audience Validation (`aud`) in JWT IdP Provider · Advisory · zitadel/zitadel · GitHub

https://github.com/zitadel/zitadel/security/advisories/GHSA-g5h5-m4hm-xjrr
github_release Patch Available

v4.15.2

Patch available: zitadel/zitadel v4.15.2

https://github.com/zitadel/zitadel/releases/tag/v4.15.2
github_release Patch Available

v3.4.12

Patch available: zitadel/zitadel v3.4.12

https://github.com/zitadel/zitadel/releases/tag/v3.4.12

Vendor Advisories for CVE-2026-55669(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/zitadel/zitadel—1.80.0-v2.20.0.20260615132747-d184e976fc79—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 41× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-26 14:46 UTCEPSS rescore
  2. 2026-08-25 13:49 UTCEPSS rescore
  3. 2026-08-25 07:23 UTCEG score recompute
  4. 2026-08-23 01:34 UTCEG score recompute
  5. 2026-08-23 00:19 UTCEPSS rescore
  6. 2026-08-21 12:22 UTCEG score recompute
  7. 2026-08-20 22:55 UTCEPSS rescore
  8. 2026-08-20 10:09 UTCEG score recompute
  9. 2026-08-19 17:04 UTCEPSS rescore
  10. 2026-08-19 08:01 UTCEG score recompute
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-16 16:14 UTCEG score recompute
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 02:14 UTCEPSS rescore
  16. 2026-08-15 14:06 UTCEG score recompute
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 11:57 UTCEG score recompute
  19. 2026-08-13 22:00 UTCEPSS rescore
  20. 2026-08-13 09:49 UTCEG score recompute
  21. 2026-08-12 13:51 UTCEPSS rescore
  22. 2026-08-11 05:31 UTCEG score recompute
  23. 2026-08-11 00:00 UTCEPSS rescore
  24. 2026-08-10 03:23 UTCEG score recompute
  25. 2026-08-09 13:46 UTCEPSS rescore
Show 34 more
  1. 2026-08-09 01:15 UTCEG score recompute
  2. 2026-08-08 16:37 UTCEPSS rescore
  3. 2026-08-07 23:06 UTCEG score recompute
  4. 2026-08-06 20:58 UTCEG score recompute
  5. 2026-08-06 13:47 UTCEPSS rescore
  6. 2026-08-05 19:17 UTCEPSS rescore
  7. 2026-08-04 16:40 UTCEG score recompute
  8. 2026-08-04 15:10 UTCEPSS rescore
  9. 2026-08-03 14:24 UTCEG score recompute
  10. 2026-08-03 10:36 UTCEPSS rescore
  11. 2026-08-02 10:23 UTCEG score recompute
  12. 2026-08-02 02:27 UTCEPSS rescore
  13. 2026-07-31 06:07 UTCEG score recompute
  14. 2026-07-30 16:28 UTCEPSS rescore
  15. 2026-07-29 01:48 UTCEG score recompute
  16. 2026-07-28 15:37 UTCEPSS rescore
  17. 2026-07-26 18:46 UTCEG score recompute
  18. 2026-07-25 14:18 UTCEPSS rescore
  19. 2026-07-24 14:18 UTCEPSS rescore
  20. 2026-07-23 14:18 UTCEPSS rescore
  21. 2026-07-23 03:20 UTCEG score recompute
  22. 2026-07-22 14:08 UTCEPSS rescore
  23. 2026-07-20 17:08 UTCEPSS rescore
  24. 2026-07-19 14:31 UTCEPSS rescore
  25. 2026-07-19 14:31 UTCEPSS rescore
  26. 2026-07-18 10:04 UTCEPSS rescore
  27. 2026-07-16 17:03 UTCEPSS rescore
  28. 2026-07-15 16:57 UTCEPSS rescore
  29. 2026-07-15 16:57 UTCEPSS rescore
  30. 2026-07-13 22:31 UTCEPSS rescore
  31. 2026-07-13 06:13 UTCEPSS rescore
  32. 2026-07-13 06:13 UTCEPSS rescore
  33. 2026-07-12 05:46 UTCEPSS rescore
  34. 2026-06-18 14:06 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-55669?
CVE-2026-55669 is a medium vulnerability published on June 18, 2026. 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…
When was CVE-2026-55669 disclosed?
CVE-2026-55669 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55669 actively exploited?
CVE-2026-55669 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.1% of all scored CVEs.
What is the CVSS score of CVE-2026-55669?
CVE-2026-55669 has a CVSS v3 base score of 4.2 (NVD).
How do I remediate CVE-2026-55669?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55669, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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