VDB
CVE-2026-27840
CVE-2026-27840
PUBLISHED
CVSS 4.300000190734863 MEDIUM
ZITADEL's truncated opaque tokens are still valid
EPSS 0.02% · 6.5th percentile
Risk Scores
CVSS v3.1
4.300000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS Score
0.02%
6.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| zitadel | zitadel | *, 3.0.0, 4.0.0 |
| github.com | zitadel/zitadel | 3.0.0, 2.31.0, 0 |
Timeline
- Feb 24, 2026 CVE ID Reserved
- Feb 26, 2026 EPSS Score
- Feb 26, 2026 CVE Published
- Feb 26, 2026 PoC Published
- Feb 26, 2026 CVE Updated
- Feb 27, 2026 EPSS Score
- Feb 28, 2026 PoC Published
- Mar 1, 2026 EPSS Score
- Mar 2, 2026 EPSS Score
- Mar 4, 2026 EPSS Score
- Mar 5, 2026 EPSS Score
- Mar 7, 2026 EPSS Score
References
- https://github.com/zitadel/zitadel/security/advisories/GHSA-6mq3-xmgp-pjm5 url
- https://github.com/zitadel/zitadel/releases/tag/v3.4.7 url
- https://github.com/zitadel/zitadel/releases/tag/v4.11.0 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-27840 advisory
- https://github.com/zitadel/zitadel/commit/feab8e1fa371f3ad654640fc869b2c14f2fdb602 url
- https://github.com/zitadel/zitadel package
- https://github.com/zitadel/zitadel/releases/tag/v2.71.19 url