Vulnerability in Tobychui Zoraxy
CVE-2026-100390
Zoraxy versions 3.2.3 through 3.3.4 fail to properly parse IPv6 addresses in the RemoteAddr field when setting forwarded headers. Unauthenticated attackers connecting over IPv6 can supply arbitrary X-Forwarded-For values to spoof their source IP and bypass authorization provider IP-based access controls.
Published .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/tobychui/zoraxy/pull/1264 (issue-tracking, patch)
- github.com/tobychui/zoraxy/commit/56bb3e5abb83eae42a64203028d73a001d6096c4 (patch)
- github.com/tobychui/zoraxy/blob/v3.3.4/src/mod/auth/sso/forward/util.go (technical-description)
- github.com/tobychui/zoraxy (product)
- www.vulncheck.com/advisories/zoraxy-3.2.3-through-3.3.4-client-ip-spoofing-via-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100390?
- CVE-2026-100390 is a high-severity vulnerability in Tobychui Zoraxy, classified under Authentication Bypass by Spoofing. CVSS score: 7.4/10. Published 2026-09-25.
- How severe is CVE-2026-100390?
- High severity. CVSS v3 base score is 7.4 out of 10.