What is the CVSS score of CVE-2023-6836?

CVE-2023-6836 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.5%.

Is there a patch available for CVE-2023-6836?

Yes, a patch is available for CVE-2023-6836. Update the affected software to the latest version immediately.

Api Manager CVE-2023-6836

HIGH

Improper Restriction of XML External Entity Reference (CWE-611)

2023-12-15 ed10eef1-636d-4fbe-9993-6890dfa878f8

XXE Api Manager Enterprise Integrator Identity Server Identity Server As Key Manager Micro Integrator Api Manager Analytics Api Microgateway Wso2

7.5

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-611 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. Sign in to read
Impact	CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	A remote attacker could read arbitrary files or perform SSRF through XML processing by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.5% exploitation probability (EPSS)

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AnalysisAI

Multiple WSO2 products have been identified as vulnerable due to an XML External Entity (XXE) attack abuses a widely available but rarely used feature of XML parsers to access sensitive information. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Disable external entity processing in XML parsers, use JSON instead of XML where possible.

Affected Packages

maven org.wso2.am:wso2am fix: 4.0.0-beta

maven org.wso2.carbon.analytics-common:org.wso2.carbon.event.input.adapter.core fix: 5.2.23

maven org.wso2.carbon.commons:org.wso2.carbon.ntask.core fix: 4.7.24

maven org.wso2.carbon.event-processing:org.wso2.carbon.event.processor.core fix: 2.2.12

maven org.wso2.carbon.governance:org.wso2.carbon.governance.common fix: 4.8.13

maven org.wso2.carbon.registry:org.wso2.carbon.registry.extensions fix: 4.7.31

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 6 packages in maven

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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. Multiple WSO2 products have been identified as vulnerable due to an XML External Entity (XXE) attack abuses a widely available but rarely used feature of XML parsers to access sensitive information. Affected products include: Wso2 Api Manager, Wso2 Api Manager Analytics, Wso2 Api Microgateway, Wso2 Enterprise Integrator, Wso2 Identity Server As Key Manager.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

DescriptionNVD

Multiple WSO2 products have been identified as vulnerable due to an XML External Entity (XXE) attack abuses a widely available but rarely used feature of XML parsers to access sensitive information.

Threat Intelligence Overview

EPSS Score

0.5%

Top 62% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

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.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.5%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +38

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

XML External Entity Injection HIGH

XML External Entity (XXE) attacks exploit XML parsers that process Document Type Definitions (DTDs) without proper restrictions.

Affected Products (CPE)NVD

cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:*

cpe:2.3:a:wso2:api_manager_analytics:2.2.0:*:*:*:*:*:*:*

cpe:2.3:a:wso2:api_manager_analytics:2.5.0:*:*:*:*:*:*:*

cpe:2.3:a:wso2:api_microgateway:2.2.0:*:*:*:*:*:*:*

cpe:2.3:a:wso2:enterprise_integrator:*:*:*:*:*:*:*:*

cpe:2.3:a:wso2:identity_server_as_key_manager:5.0.0:*:*:*:*:*:*:*

cpe:2.3:a:wso2:identity_server_as_key_manager:5.6.0:*:*:*:*:*:*:*

cpe:2.3:a:wso2:identity_server_as_key_manager:5.7.0:*:*:*:*:*:*:*

cpe:2.3:a:wso2:identity_server_as_key_manager:5.9.0:*:*:*:*:*:*:*

cpe:2.3:a:wso2:identity_server:5.4.0:*:*:*:*:*:*:*

cpe:2.3:a:wso2:identity_server:5.4.1:*:*:*:*:*:*:*

cpe:2.3:a:wso2:identity_server:5.5.0:*:*:*:*:*:*:*

cpe:2.3:a:wso2:identity_server:5.6.0:*:*:*:*:*:*:*

cpe:2.3:a:wso2:micro_integrator:1.0.0:*:*:*:*:*:*:*

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References

Advisories & patches

ADVISORY https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2021/WSO2-2020-0716/

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