CVE-2026-45049 Open Access Management (OpenAM) - Authentication Bypass

Open Access Management (OpenAM) < 16.1.1 contains a session hijacking vulnerability caused by the Cross-Domain Single Sign-On (CDSSO) servlet allowing raw session tokens to be POSTed to attacker-controlled URLs, letting attackers hijack sessions via authenticated victims visiting crafted URLs, exploit requires CDSSO enabled and non-default configuration absent.

CVSS base score 8.3 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.33% 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:R/S:C/C:H/I:H/A:H
Published
29 October 2026
Updated
31 October 2026
Weakness
CWE-201

Vendor fix

Upgrade to version 16.1.1 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

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