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CVE-2026-56668

HIGH
8.1
CVSS 3.1
Description
ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL's OAuth2 Token Exchange endpoint for urn:ietf:params:oauth:grant-type:token-exchange does not verify that the subject token belongs to the requesting client or that requested scopes remain within the original token's scopes, allowing a low-privilege token to be exchanged for elevated permissions at another application. This issue is fixed in version 4.15.3.

Metadata

CVE ID
CVE-2026-56668
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-22 16:39 UTC
Published
2026-07-10 17:46 UTC
Last updated
2026-07-10 17:46 UTC
Primary CWE
CWE-862
CWE-862: Missing Authorization
Vendor / Product
zitadel / zitadel
Sources
cve.org  ·  NVD

Severity & Metrics

8.1 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected products (1)
VendorProductPlatformVersions
zitadel zitadel — < 4.15.3
Weakness (CWE)
CWESourceDescription
CWE-862 cna CWE-862: Missing Authorization
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.1 HIGH 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References (3)
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