CVE-2023-6836

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.

Published: 2023-12-15 Last update: 2024-11-21 Assigner: ed10eef1-636d-4fbe-9993-6890dfa878f8 Source: ed10eef1-636d-4fbe-9993-6890dfa878f8
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-6836 is rated Low Risk (32.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.17%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-6836

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-05-05 0.12% 0.17% +0.04%
2 2025-04-20 0.21% 0.12% -0.08%
3 2025-03-30 — 0.21% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-6836

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.1 2.5 ed10eef1-636d-4fbe-9993-6890dfa878f8
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2023-6836

GitHub Security Advisory for CVE-2023-6836

GHSA-cr8h-fr86-8vfv · Severity: medium · Ecosystem: maven — WSO2 products vulnerable to XML External Entity attack

Affected software / configurations for CVE-2023-6836

Vendor Product Version Raw CPE
wso2 api_manager <= 3.0.0 cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:*
wso2 api_manager_analytics 2.2.0 cpe:2.3:a:wso2:api_manager_analytics:2.2.0:*:*:*:*:*:*:*
wso2 api_manager_analytics 2.5.0 cpe:2.3:a:wso2:api_manager_analytics:2.5.0:*:*:*:*:*:*:*
wso2 api_microgateway 2.2.0 cpe:2.3:a:wso2:api_microgateway:2.2.0:*:*:*:*:*:*:*
wso2 enterprise_integrator <= 6.6.0 cpe:2.3:a:wso2:enterprise_integrator:*:*:*:*:*:*:*:*
wso2 identity_server_as_key_manager 5.0.0 cpe:2.3:a:wso2:identity_server_as_key_manager:5.0.0:*:*:*:*:*:*:*
wso2 identity_server_as_key_manager 5.6.0 cpe:2.3:a:wso2:identity_server_as_key_manager:5.6.0:*:*:*:*:*:*:*
wso2 identity_server_as_key_manager 5.7.0 cpe:2.3:a:wso2:identity_server_as_key_manager:5.7.0:*:*:*:*:*:*:*
wso2 identity_server_as_key_manager 5.9.0 cpe:2.3:a:wso2:identity_server_as_key_manager:5.9.0:*:*:*:*:*:*:*
wso2 identity_server 5.4.0 cpe:2.3:a:wso2:identity_server:5.4.0:*:*:*:*:*:*:*
wso2 identity_server 5.4.1 cpe:2.3:a:wso2:identity_server:5.4.1:*:*:*:*:*:*:*
wso2 identity_server 5.5.0 cpe:2.3:a:wso2:identity_server:5.5.0:*:*:*:*:*:*:*
wso2 identity_server 5.6.0 cpe:2.3:a:wso2:identity_server:5.6.0:*:*:*:*:*:*:*
wso2 micro_integrator 1.0.0 cpe:2.3:a:wso2:micro_integrator:1.0.0:*:*:*:*:*:*:*

References for CVE-2023-6836

cvelogic Threat Intelligence