CVE-2026-123540
📛 CVE Title
OpenAM before 16.1.4 Incomplete Attribute Encoding in SAML 1.x Form POST
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.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- VulnCheck
- CVSS severity
- LOW
- CVSS score
- 2.0 / 10
- CVSS 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- Effective score
- 2.0 / 10 LOW source: CNA overview
- CWE(s)
-
CWE-116 - Reserved
- 2026-11-06
- Published
- 2026-11-08 01:37 UTC
- Last updated
- 2026-11-08 01:37 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/123xxx/CVE-2026-123540.json
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-119425
EUVD enrichment is queued; refresh the page in a few seconds.
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| OpenIdentityPlatform | OpenAM |
0 (affected),
16.1.4 (unaffected)
|
— |
Vendor references (2)
References embedded in the original CVE record by the assigning CNA.
- GitHub Security Advisory (GHSA-pw99-8h4m-p3gm) vendor-advisory
- VulnCheck Advisory: OpenAM before 16.1.4 Incomplete Attribute Encoding in SAML 1.x Form POST third-party-advisory
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
Remediations (10)
-
web:app.opencve.io
Explore the latest vulnerabilities and security issues in the CVE database
2026-11-08 11:27 UTC -
web:blogs.oracle.com
For more information about the Critical Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.
2026-11-08 11:27 UTC -
web:blogs.oracle.com
For more information about the Critical Security Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.
2026-11-08 11:27 UTC -
web:cvefeed.io
The following list is the news that have been mention CVE-2026-123540 vulnerability anywhere in the article. Results are limited to the first 20 news articles due to potential performance issues. The following table lists the changes that have been made to the CVE-2026-123540 vulnerability over time.
2026-11-08 11:27 UTC -
web:radar.offseq.com
Upgrade OpenAM to version 16.1.4 or later, where this output encoding vulnerability is fixed. No other mitigation is indicated by the vendor advisory.
2026-11-08 11:27 UTC -
web:support.esri.com
This patch deals specifically with the issues listed below under Issues addressed with this patch . As part of the patch installation, the ArcGIS Server service is stopped and restarted. The restart may take several minutes depending on the number of services published on the ArcGIS Server site. This patch can be uninstalled as outlined in the Uninstalling this patch on Windows and Uninstalling ...
2026-11-08 11:27 UTC -
web:support.esri.com
The issues resolved by these patches are listed in the Issues addressed with this patch section below. As part of the patch installation, the ArcGIS Server service is stopped and restarted. The restart may take several minutes depending on the number of services published on the ArcGIS Server site. This patch can be uninstalled as outlined in the Uninstalling this patch on Windows and ...
2026-11-08 11:27 UTC -
web:support.sap.com
On 13 th of October 2026 , SAP security patch day saw the release of 16 new security notes and 4 GitHub security advisories. There are 2 updates to previously released security notes.
2026-11-08 11:27 UTC -
web:www.oracle.com
Prior Critical Patch Update and Critical Security Patch Update advisories should be reviewed for information regarding earlier published security patches. Refer to Critical Patch Updates, Critical Security Patch Updates, Security Alerts and Bulletins for information about Oracle Security advisories.
2026-11-08 11:27 UTC -
web:www.tenable.com
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 ...
2026-11-08 11:27 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-123540.json.
{
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{
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"packageURL": "pkg:maven/org.openidentityplatform.openam/openam-federation-library",
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"vendor": "OpenIdentityPlatform",
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{
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"status": "affected",
"version": "0",
"versionType": "semver"
},
{
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}
]
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],
"negate": false,
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}
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],
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{
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],
"datePublic": "2026-10-22T00:00:00.000Z",
"descriptions": [
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}
],
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"version": "3.1"
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"problemTypes": [
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"descriptions": [
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"cweId": "CWE-116",
"description": "Improper Encoding or Escaping of Output",
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"providerMetadata": {
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],
"url": "https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-pw99-8h4m-p3gm"
},
{
"name": "VulnCheck Advisory: OpenAM before 16.1.4 Incomplete Attribute Encoding in SAML 1.x Form POST",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/openam-before-16.1.4-incomplete-attribute-encoding-in-saml-1-x-form-post"
}
],
"title": "OpenAM before 16.1.4 Incomplete Attribute Encoding in SAML 1.x Form POST",
"x_generator": {
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"cveMetadata": {
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"datePublished": "2026-11-08T01:37:46.615Z",
"dateReserved": "2026-11-06T00:48:46.279Z",
"dateUpdated": "2026-11-08T01:37:46.615Z",
"state": "PUBLISHED"
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