CVE-2026-53660 json
OpenAM Insecure SSO Cookie Initialization
published 2026-08-14 2 mo ago modified 2026-10-28 11 d ago also EUVD-2026-78353 , GHSA-fpmh-vx4h-xc33
- cvss
- 7.4
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the default configuration initializes the iPlanetDirectoryPro SSO cookie with HttpOnly disabled and without a protective SameSite default, and OAuth and OpenID Connect consent flows reuse that cookie through CsrfProtection as a CSRF token. When combined with same-origin cross-site scripting and a user following an attacker-controlled link, the cookie can be read and reused to steal the SSO session and complete attacker-driven consent grants. This issue is fixed in version 16.1.1.
Patch / fix
- maven org.openidentityplatform.openam:openam-core 16.1.1
- openidentityplatform openam 16.1.1
- org.openidentityplatform.openam openam-core 16.1.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 55 d ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.4 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 7.4 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.openidentityplatform.openam:openam-core | <16.1.1 |
16.1.1 |
Affected products
- OpenIdentityPlatform OpenAM
Classification
References
-
github.com
/OpenIdentityPlatform/OpenAM/commit/2af597267e6eb9302f75445c2c726f9b84f62966
web
-
github.com
/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-fpmh-vx4h-xc33
web
-
github.com
/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-53660
advisory
-
github.com
/OpenIdentityPlatform/OpenAM
package
Sources
- CVE List CVE-2026-53660
- GitHub Advisory GHSA-fpmh-vx4h-xc33
- NVD CVE-2026-53660
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.