CVE-2026-123540

OpenAM before 16.1.4 Incomplete Attribute Encoding in SAML 1.x Form POST

Published Nov 8, 2026 CVSS 4.0 · 2 Low EPSS < 1% KEV · Not listed
Description
OpenAM before 16.1.4 contains an incomplete output encoding vulnerability that allows a SAML 1.x identity provider to alter attribute values by injecting unencoded content into the service provider auto-submitted form. Attackers controlling a trusted identity provider can craft assertion attribute names or values that reach the target application in modified form, undermining the integrity of received attributes.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description OpenAM before 16.1.4 contains an incomplete output encoding vulnerability that allows a SAML 1.x identity provider to alter attribute values by injecting unencoded content into the service provider auto-submitted form. Attackers controlling a trusted identity provider can craft assertion attribute names or values that reach the target application in modified form, undermining the integrity of received attributes.
Title OpenAM before 16.1.4 Incomplete Attribute Encoding in SAML 1.x Form POST
First Time appeared Openidentityplatform
Openidentityplatform openam
Weaknesses CWE-116
CPEs cpe:2.3:a:openidentityplatform:openam:*:*:*:*:*:*:*:*
Vendors & Products Openidentityplatform
Openidentityplatform openam
References
Metrics cvssV3_1

{'score': 2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 12, 2026, 12:52 PM
Reserved
Nov 6, 2026, 12:48 AM
Status
Awaiting Analysis
Published
Nov 8, 2026, 2:16 AM
Modified
Nov 12, 2026, 1:17 PM