CVE-2025-51479

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-07-22 · updated 2026-06-17
Weakness: CWE-639

Description

Authorization bypass in update_user_group in onyx-dot-app Onyx Enterprise Edition 0.27.0 allows remote authenticated attackers to modify arbitrary user groups via crafted PATCH requests to the /api/manage/admin/user-group/id endpoint, bypassing intended curator-group assignment checks.

Affected products

onyx-dot-app onyx: 0.27.0

References

https://github.com/onyx-dot-app/onyx
https://github.com/onyx-dot-app/onyx/pull/4714
https://www.gecko.security/blog/cve-2025-51479

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