CVE-2026-33376
Auth Proxy IPv6 whitelist bypass
7.4
HIGH
CVSS 3.1
EPSS 0.02%
Description
When using an IPv6 allow-list for the Auth Proxy feature, it defaults to /32 addresses. Addresses specifying a mask explicitly are not affected; to mitigate easily, add the desired mask (usually /128) to the addresses. Only auth proxy is affected; Okta, SAML, LDAP, etc are unaffected here.
How to fix CVE-2026-33376
To remediate CVE-2026-33376, upgrade the affected package to a fixed version below.
- —upgrade to 11.6.14 or later
Is CVE-2026-33376 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 9.4.0, < 11.6.14, >= 12.0.0, < 12.2.8, >= 12.3.0, < 12.3.6, >= 12.4.0, < 12.4.3, >= 13.0.0, < 13.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |