CVE-2016-4312 XML external entity in n/a
Authenticated attackers can exploit an XXE vulnerability in WSO2 Identity Server to read arbitrary files or cause denial of service via crafted XACML requests.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-4312?
CVE-2016-4312 is a high-severity vulnerability in Wso2 Identity Server, published on 16 Feb 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
XML external entity (XXE) vulnerability in the XACML flow feature in WSO2 Identity Server 5.1.0 before WSO2-CARBON-PATCH-4.4.0-0231 allows remote authenticated users with access to XACML features to read arbitrary files, cause a denial of service, conduct server-side request forgery (SSRF) attacks, or have unspecified other impact via a crafted XACML request to entitlement/eval-policy-submit.jsp. NOTE: this issue can be combined with CVE-2016-4311 to exploit the vulnerability without credentials.
Weakness: CWE-611
Which versions are affected by CVE-2016-4312?
It affects 1 product.
Products include Wso2 Identity Server.
How do I fix CVE-2016-4312?
No fix has been published for CVE-2016-4312 yet. Limit exposure of the affected software until one is available.
Is CVE-2016-4312 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-4312 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Wso2 Identity Server
- CVE-2016-4311 Cross-site request forgery in n/a
- CVE-2025-10470 Denial-of-Service via Magic Link Authentication in WSO2 Identity Server Allows Service Unavailability
- CVE-2025-12107 Server-Side Template Injection via Velocity Template Engine in Multiple WSO2 Products Allows Remote Code Execution
- CVE-2025-10908 Account Lock Bypass via Magic Link or Pass Key Authentication in WSO2 Identity Server Allows Unauthorized Access
- CVE-2025-0663 Auth bypass in WSO2 Identity Server
Sources
Also known as GHSA-rx7g-4gvj-h8m6.