CVE-2023-37471
User impersonation using SAMLv1.x SSO in Open Access Management
Open Access Management (OpenAM) is an access management solution that includes Authentication, SSO, Authorization, Federation, Entitlements and Web Services Security. OpenAM up to version 14.7.2 does not properly validate the signature of SAML responses received as part of the SAMLv1.x Single Sign-On process. Attackers can use this fact to impersonate any OpenAM user, including the administrator, by sending a specially crafted SAML response to the SAMLPOSTProfileServlet servlet. This problem has been patched in OpenAM 14.7.3-SNAPSHOT and later. User unable to upgrade should comment servlet SAMLPOSTProfileServlet from their pom file. See the linked GHSA for details.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
9.1
User impersonation using SAMLv1.x SSO in Open Access Management
Open Access Management (OpenAM) is an access management solution that includes Authentication, SSO, Authorization, Federation, Entitlements and Web Services Security. OpenAM up to version 14.7.2 does not properly validate the signature of SAML responses received as part of the SAMLv1.x Single Sign-On process. Attackers can use this fact to impersonate any OpenAM user, including the administrator, by sending a specially crafted SAML response to the SAMLPOSTProfileServlet servlet. This problem has been patched in OpenAM 14.7.3-SNAPSHOT and later. User unable to upgrade should comment servlet SAMLPOSTProfileServlet from their pom file. See the linked GHSA for details.
- Record
CVE-2023-37471- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
EUVDEUVD-2023-1953
9.1
Open Access Management (OpenAM) is an access management solution that includes Authentication, SSO, Authorization, Federation, Entitlements and Web Services Security. OpenAM up to version 14.7.2 does not properly validate the signature of SAML responses received as part of the SAMLv1.x Single Sign-On process. Attackers can use this fact to impersonate any OpenAM user, including the administrator, by sending a specially crafted SAML response to the SAMLPOSTProfileServlet servlet. This problem has been patched in OpenAM 14.7.3-SNAPSHOT and later. User unable to upgrade should comment servlet SAMLPOSTProfileServlet from their pom file. See the linked GHSA for details.
- Record
EUVD-2023-1953- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4mh8-9wq6-rjxg
9.1
OpenAM vulnerable to user impersonation using SAMLv1.x SSO process
Impact
OpenAM up to version 14.7.2 does not properly validate the signature of SAML responses received as part of the SAMLv1.x Single Sign-On process. Attackers can use this fact to impersonate any OpenAM user, including the administrator, by sending a specially crafted SAML response to the SAMLPOSTProfileServlet servlet.
Patches
This problem has been patched in OpenAM 14.7.3-SNAPSHOT and later
Workarounds
One should comment servlet SAMLPOSTProfileServlet in web.xml or disable SAML in OpenAM
<servlet>
<description>SAMLPOSTProfileServlet</description>
<servlet-name>SAMLPOSTProfileServlet</servlet-name>
<servlet-class>com.sun.identity.saml.servlet.SAMLPOSTProfileServlet</servlet-class>
</servlet>
...
<servlet-mapping>
<servlet-name>SAMLSOAPReceiver</servlet-name>
<url-pattern>/SAMLSOAPReceiver</url-pattern>
</servlet-mapping>
References
#624
- Record
GHSA-4mh8-9wq6-rjxg- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
NVD
9.1
Open Access Management (OpenAM) is an access management solution that includes Authentication, SSO, Authorization, Federation, Entitlements and Web Services Security. OpenAM up to version 14.7.2 does not properly validate the signature of SAML responses received as part of the SAMLv1.x Single Sign-On process. Attackers can use this fact to impersonate any OpenAM user, including the administrator, by sending a specially crafted SAML response to the SAMLPOSTProfileServlet servlet. This problem has been patched in OpenAM 14.7.3-SNAPSHOT and later. User unable to upgrade should comment servlet SAMLPOSTProfileServlet from their pom file. See the linked GHSA for details.
- Record
CVE-2023-37471- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
OSV
9.1
User impersonation using SAMLv1.x SSO in Open Access Management
Open Access Management (OpenAM) is an access management solution that includes Authentication, SSO, Authorization, Federation, Entitlements and Web Services Security. OpenAM up to version 14.7.2 does not properly validate the signature of SAML responses received as part of the SAMLv1.x Single Sign-On process. Attackers can use this fact to impersonate any OpenAM user, including the administrator, by sending a specially crafted SAML response to the SAMLPOSTProfileServlet servlet. This problem has been patched in OpenAM 14.7.3-SNAPSHOT and later. User unable to upgrade should comment servlet SAMLPOSTProfileServlet from their pom file. See the linked GHSA for details.
- Record
CVE-2023-37471- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
OSVGHSA-4mh8-9wq6-rjxg
9.1
OpenAM vulnerable to user impersonation using SAMLv1.x SSO process
Impact
OpenAM up to version 14.7.2 does not properly validate the signature of SAML responses received as part of the SAMLv1.x Single Sign-On process. Attackers can use this fact to impersonate any OpenAM user, including the administrator, by sending a specially crafted SAML response to the SAMLPOSTProfileServlet servlet.
Patches
This problem has been patched in OpenAM 14.7.3-SNAPSHOT and later
Workarounds
One should comment servlet SAMLPOSTProfileServlet in web.xml or disable SAML in OpenAM
<servlet>
<description>SAMLPOSTProfileServlet</description>
<servlet-name>SAMLPOSTProfileServlet</servlet-name>
<servlet-class>com.sun.identity.saml.servlet.SAMLPOSTProfileServlet</servlet-class>
</servlet>
...
<servlet-mapping>
<servlet-name>SAMLSOAPReceiver</servlet-name>
<url-pattern>/SAMLSOAPReceiver</url-pattern>
</servlet-mapping>
References
#624
- Record
GHSA-4mh8-9wq6-rjxg- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.openidentityplatform.openam:openam-federation-libraryMaven |
before 14.7.3 | 14.7.3 |
org.openidentityplatform.openam:openam-federation-libraryMaven |
before 14.7.3, plus listed versions 14.5.214.5.314.5.414.6.114.6.2 Show 7 moreShow less14.6.314.6.414.6.514.6.614.7.014.7.114.7.2 |
14.7.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-37471 is a critical vulnerability (CVSS 9.1) in Openidentityplatform Openam, published July 20, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.26%, the 69th percentile. Fixed in org.openidentityplatform.openam:openam-federation-library 14.7.3.
References
github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-4mh8-9wq6-rjxg
github.com/OpenIdentityPlatform/OpenAM/pull/624
github.com/OpenIdentityPlatform/OpenAM/commit/7c18543d126e8a567b83bb4535631825aaa9d742
nvd.nist.gov/vuln/detail/CVE-2023-37471
github.com/advisories/GHSA-4mh8-9wq6-rjxg
github.com/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37471.json
github.com/OpenIdentityPlatform/OpenAM