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CVE-2025-51479

18
FAUCET Score

CVE-2025-51479 describes an authorization bypass vulnerability in Onyx Enterprise Edition 0.27.0, specifically within the update_user_group function. This flaw allows remote authenticated attackers to modify arbitrary user groups by sending crafted PATCH requests to the /api/manage/admin/user-group/id endpoint, circumventing intended curator-group assignment checks. Rated as Medium severity (CVSS 5.4), a successful exploit could lead to low impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
0.27.0CPE matchmatch criteria
cpe:2.3:a:onyx:onyx:0.27.0:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
20.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 25th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / onyx-dot-app/onyx
Product
github.com / onyx-dot-app/onyx/pull/4714
ExploitIssue Tracking
gecko.security / blog/cve-2025-51479
ExploitThird Party Advisory