CVE-2026-33439

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Source
https://cve.org/CVERecord?id=CVE-2026-33439
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-33439.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-33439
Aliases
Published
2026-04-07T20:46:33.739Z
Modified
2026-04-09T11:46:21.097846Z
Severity
  • 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Pre-Authentication Remote Code Execution via `jato.clientSession` Deserialization in OpenAM
Details

Open Access Management (OpenAM) is an access management solution. Prior to 16.0.6, OpenIdentityPlatform OpenAM is vulnerable to pre-authentication Remote Code Execution (RCE) via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypasses the WhitelistObjectInputStream mitigation that was applied to the jato.pageSession parameter after CVE-2021-35464. An unauthenticated attacker can achieve arbitrary command execution on the server by sending a crafted serialized Java object as the jato.clientSession GET/POST parameter to any JATO ViewBean endpoint whose JSP contains <jato:form> tags (e.g., the Password Reset pages). This vulnerability is fixed in 16.0.6.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33439.json",
    "cwe_ids": [
        "CWE-502"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/openidentityplatform/openam

Affected ranges

Type
GIT
Repo
https://github.com/openidentityplatform/openam
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
4529f108e9f5d3b8f98b4afb3dd035a3c4d73a1b
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "16.0.6"
        }
    ]
}

Affected versions

13.*
13.0.0
13.0.0-RC1
13.0.0-RC10
13.0.0-RC2
13.0.0-RC3
13.0.0-RC4
13.0.0-RC5
13.0.0-RC6
13.0.0-RC7
13.0.0-RC8
13.0.0-RC9
14.*
14.0.0
14.0.1
14.0.2
14.0.3
14.0.4
14.0.5
14.0.6
14.1.1
14.1.10
14.1.11
14.1.12
14.1.13
14.1.16
14.1.17
14.1.2
14.1.3
14.1.4
14.1.5
14.1.6
14.1.7
14.1.8
14.1.9
14.2.1
14.2.2
14.3.1
14.4.1
14.4.2
14.5.1
14.5.2
14.5.3
14.5.4
14.6.2
14.6.3
14.6.4
14.6.5
14.6.6
14.7.0
14.7.1
14.7.2
14.7.3
14.7.4
14.8.1
14.8.2
14.8.3
14.8.4
15.*
15.0.0
15.0.1
15.0.2
15.0.3
15.0.4
15.1.0
15.1.1
15.1.2
15.1.3
15.1.4
15.1.5
15.1.6
15.2.0
15.2.1
15.2.2
16.*
16.0.3
16.0.4
16.0.5

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-33439.json"