Roxy-WI: Authentication bypass via 'api' substring in URL + unauthenticated /api/gpt

published 2026-06-10 4 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-36064

cvss: 8.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits: 0; none known

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, there is an authentication bypass vulnerability via 'api' substring in URL + unauthenticated /api/gpt. At time of publication, there are no publicly available patches.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 4 mo ago (2026-06-10)

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/roxy-wi/roxy-wi/security/advisories/GHSA-4fcm-qgg8-w2vf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Affected products

roxy-wi roxy-wi

Classification

Weakness

CWE-287 Improper Authentication
CWE-306 Missing Authentication for Critical Functionality
CWE-697 Incorrect Comparison

References

github.com /roxy-wi/roxy-wi/security/advisories/GHSA-4fcm-qgg8-w2vf
exploit

Sources

CVE List CVE-2026-45567
NVD CVE-2026-45567

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary