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Vulnerability record · CVE-2016-4312 · published 17 February 2017

CVE-2016-4312: Wso2 identity server xml external entity (xxe) vulnerability

Wso2 · Identity Server

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.

7.5 CVSS 3.0 High EPSS 6.0% · top 6.9% CWE-611 · XML external entity (XXE)
7.5CVSS 3.0 base score, v2 6.0
6.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References, 6 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://hyp3rlinx.altervista.org/advisories/WSO2-IDENTITY-SERVER-v5.1.0-XML-External-Entity.txt ExploitThird Party Advisory
http://packetstormsecurity.com/files/138329/WSO2-Identity-Server-5.1.0-XML-Injection.html ExploitThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/539199/100/0/threaded
http://www.securityfocus.com/bid/92485 Third Party AdvisoryVDB Entry
https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2016-0096 PatchVendor Advisory
https://www.exploit-db.com/exploits/40239/ ExploitThird Party AdvisoryVDB Entry
http://hyp3rlinx.altervista.org/advisories/WSO2-IDENTITY-SERVER-v5.1.0-XML-External-Entity.txt ExploitThird Party Advisory
http://packetstormsecurity.com/files/138329/WSO2-Identity-Server-5.1.0-XML-Injection.html ExploitThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/539199/100/0/threaded
http://www.securityfocus.com/bid/92485 Third Party AdvisoryVDB Entry
https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2016-0096 PatchVendor Advisory
https://www.exploit-db.com/exploits/40239/ ExploitThird Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-4312), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.