How severe is CVE-2025-51479?

CVE-2025-51479 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-51479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-51479?

CVE-2025-51479 affects Onyx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-51479?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-51479 have an EU (EUVD) identifier?

Yes. CVE-2025-51479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22353.

When was CVE-2025-51479 published?

CVE-2025-51479 was published on 2025-07-22 and last updated on 2026-06-17.

CVE-2025-51479

CVE-2025-51479 is a medium-severity vulnerability in Onyx with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22353
Weakness: CWE-639
Affected product: Onyx
Published: 2025-07-22
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-51479?: 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.
How severe is CVE-2025-51479?: CVE-2025-51479 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-51479 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-51479?: CVE-2025-51479 affects Onyx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-51479?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-51479 have an EU (EUVD) identifier?: Yes. CVE-2025-51479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22353.
When was CVE-2025-51479 published?: CVE-2025-51479 was published on 2025-07-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:onyx:onyx:0.27.0:*:*:*:enterprise:*:*:*

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