CVE-2026-100390: tobychui zoraxy · Authentication Bypass by Spoofing
Affects tobychui zoraxySource CVE Database V5
Not known to be exploited · CVSS 9.1 Critical.
Data as of 7 Nov 2026, 23:24 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| tobychuizoraxy | Affected
| Fixed in– |
GitHubtobychui/zoraxypkg:github/tobychui/zoraxyOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until an official fix is available, consider restricting IPv6 access or disabling reliance on X-Forwarded-For headers for IP-based access control as temporary mitigations.
Description
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.
References
- github.com/tobychui/zoraxy/pull/1264 (opens in a new tab)
- github.com/tobychui/zoraxy/commit/56bb3e5abb83eae42a64203028d73a001d6096c4 (opens in a new tab)
- github.com/tobychui/zoraxy/blob/v3.3.4/src/mod/auth/sso/forward/util.go (opens in a new tab)
- github.com/tobychui/zoraxy (opens in a new tab)
- vulncheck.com/advisories/zoraxy-3.2.3-through-3.3.4-client-ip-spoofing-via-x-forwarded-for-ipv6 (opens in a new tab)