CVE-2026-27840
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
Description
ZITADEL's truncated opaque tokens are still valid in github.com/zitadel/zitadel
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/zitadel/zitadel | >=4.0.0,<4.11.0 | 4.11.0 |
| Go | github.com/zitadel/zitadel | >=3.0.0,<3.4.7 | 3.4.7 |
| Go | github.com/zitadel/zitadel | >=2.31.0,<=2.71.19 | |
| Go | github.com/zitadel/zitadel | <1.80.0-v2.20.0.20260216092519-feab8e1fa371 | 1.80.0-v2.20.0.20260216092519-feab8e1fa371 |
| Go | github.com/zitadel/zitadel | | |
References
- https://github.com/zitadel/zitadel/security/advisories/GHSA-6mq3-xmgp-pjm5
- https://nvd.nist.gov/vuln/detail/CVE-2026-27840
- https://github.com/zitadel/zitadel/commit/feab8e1fa371f3ad654640fc869b2c14f2fdb602
- https://github.com/zitadel/zitadel
- https://github.com/zitadel/zitadel/releases/tag/v2.71.19
- https://github.com/zitadel/zitadel/releases/tag/v3.4.7
- https://github.com/zitadel/zitadel/releases/tag/v4.11.0
Verify integrity in audit chain (admin only). AS-IS.