Identity Server
CVE-2016-4312
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A02:2025 - Security Misconfiguration
ASVS 5.0
V13 - Configuration XML external entity prevention
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, high complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 5.42%. |
| Exploit ScenarioDerived | A remote attacker could read arbitrary files or perform SSRF through XML processing by sending crafted requests to the affected application. |
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Alert meAnalysisAI
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. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Disable external entity processing in XML parsers, use JSON instead of XML where possible.
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Technical ContextAI · show details
This vulnerability is classified as XML External Entity (XXE) (CWE-611), which allows attackers to read arbitrary files or perform SSRF through XML processing. 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. Affected products include: Wso2 Identity Server.
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Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Exploit-DB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.
XML External Entity (XXE) attacks exploit XML parsers that process Document Type Definitions (DTDs) without proper restrictions.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
More in Identity Server
View allCertain WSO2 products allow unrestricted file upload with resultant remote code execution. Rated critical severity (CVSS
An incorrect authorization vulnerability exists in multiple WSO2 products due to a flaw in the SOAP admin service, which
Cross-site request forgery (CSRF) vulnerability in the XACML flow feature in WSO2 Identity Server 5.1.0 allows remote at
A reflected XSS issue exists in the Management Console of several WSO2 products. Rated medium severity (CVSS 6.1), this
An issue was discovered in WSO2 Identity Server through 5.10.0 and WSO2 IS as Key Manager through 5.10.0. Rated medium s
WSO2 Data Analytics Server 3.1.0 has XSS in carbon/resources/add_collection_ajaxprocessor.jsp via the collectionName or
An issue was discovered in WSO2 Identity Server through 5.9.0 and WSO2 IS as Key Manager through 5.9.0. Rated medium sev
An issue was discovered in WSO2 Identity Server through 5.9.0 and WSO2 IS as Key Manager through 5.9.0. Rated medium sev
WSO2 Identity Server before 5.5.0 has XSS via the dashboard, allowing attacks by low-privileged attackers. Rated medium
An issue was discovered in certain WSO2 products. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit
An issue was discovered in certain WSO2 products. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit
Multiple WSO2 products have been identified as vulnerable to perform user impersonatoin using JIT provisioning. Rated hi
GitHub PoC