CVE-2026-87004 Tugtainer - Authentication Bypass

Tugtainer < 1.31.3 contains an authentication bypass caused by improper OIDC id_token validation in auth_oidc_provider.py, letting attackers bypass token verification and impersonate users, exploit requires valid OIDC login flow completion.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.34% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
30 September 2026
Updated
15 October 2026
Weakness
CWE-347

Vendor fix

Upgrade to version 1.31.3 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs