Vulnerability-Lookup

CVE-2026-53660 (GCVE-0-2026-53660)

Vulnerability from cvelistv5 – Published: 2026-09-15 09:45 – Updated: 2026-09-15 12:58

Title

OpenAM Insecure SSO Cookie Initialization

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.

Severity

7.4 (High)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 12:58 UTC

CWE

CWE-1004 - Sensitive Cookie Without 'HttpOnly' Flag
CWE-1188 - Insecure Default Initialization of Resource
CWE-1275 - Sensitive Cookie with Improper SameSite Attribute

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/OpenIdentityPlatform/OpenAM/se…	x_refsource_CONFIRM
https://github.com/OpenIdentityPlatform/OpenAM/co…	x_refsource_MISC
https://github.com/OpenIdentityPlatform/OpenAM/re…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
OpenIdentityPlatform	OpenAM	Affected: < 16.1.1	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-53660

Vulnerability from fkie_nvd - Published: 2026-09-15 10:17 - Updated: 2026-09-15 13:16

Severity

7.4 (High) - 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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/OpenIdentityPlatform/OpenAM/commit/2af597267e6eb9302f75445c2c726f9b84f62966
	security-advisories@github.com	https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1
	security-advisories@github.com	https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-fpmh-vx4h-xc33

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "OpenAM",
          "vendor": "OpenIdentityPlatform",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 16.1.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-53660",
  "lastModified": "2026-09-15T13:16:42.597",
  "metrics": {
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          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
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GHSA-FPMH-VX4H-XC33

Vulnerability from github – Published: 2026-08-14 19:25 – Updated: 2026-08-14 19:25

Summary

OpenAM Insecure SSO Cookie Initialization

Details

Summary

Description An Insecure Default Initialization of Resource (CWE-1188) issue in the OpenAM default configuration ships the iPlanetDirectoryPro SSO cookie with HttpOnly=false. Also, the iPlanetDirectoryPro SSO cookie is used as a CSRF token in OAuth/OIDC flows. This affects OpenAM Community Edition through version 16.0.6 and was patched in version 16.1.1.

Impact

A single click on an attacker link may yield full SSO session theft of any authenticated console user when chained with any other same-origin XSS in the OpenAM origin. The missing SameSite default also widens the CSRF surface. Also, because the consent flow reuses the SSO cookie as its CSRF token, any XSS in the OpenAM origin both steals the session and completes attacker-driven OAuth consent grants in one step.

Patch

This has been patched in OpenAM Community Edition version 16.1.1. Users are encouraged to update to the latest release.

Severity

7.0 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.openidentityplatform.openam:openam-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "16.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-53660"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1004",
      "CWE-1188",
      "CWE-1275"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-14T19:25:57Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Summary\n\n**Description**\nAn Insecure Default Initialization of Resource (CWE-1188) issue in the OpenAM default configuration ships the `iPlanetDirectoryPro` SSO cookie with `HttpOnly=false`. Also, the `iPlanetDirectoryPro` SSO cookie is used as a CSRF token in OAuth/OIDC flows. This affects OpenAM Community Edition through version 16.0.6 and was patched in version 16.1.1.\n\n## Impact\nA single click on an attacker link may yield full SSO session theft of any authenticated console user when chained with any other same-origin XSS in the OpenAM origin. The missing `SameSite` default also widens the CSRF surface. Also, because the consent flow reuses the SSO cookie as its CSRF token, any XSS in the OpenAM origin both steals the session and completes attacker-driven OAuth consent grants in one step.\n\n## Patch\nThis has been patched in OpenAM Community Edition version 16.1.1. Users are encouraged to update to the latest release.",
  "id": "GHSA-fpmh-vx4h-xc33",
  "modified": "2026-08-14T19:25:57Z",
  "published": "2026-08-14T19:25:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-fpmh-vx4h-xc33"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/OpenIdentityPlatform/OpenAM"
    },
    {
      "type": "WEB",
      "url": "https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenAM Insecure SSO Cookie Initialization"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-53660 (GCVE-0-2026-53660)

FKIE_CVE-2026-53660

GHSA-FPMH-VX4H-XC33

Summary

Impact

Patch

Tags

Sightings

Nomenclature