`CVE-2023-6836`

Affected software	7 products, listed below
Severity	7.5 High CVSS 3.1 2 scores
Fixed in	`4.7.24`
Weakness	XML external entity (XXE) (CWE-611)
Published	15 Dec 2023
Updated	17 Jun 2026

Description

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 2 years ago.

CISA KEV not listed
VulnCheck KEV not listed
CISA Vulnrichment no assessment published
Indexed PoC none indexed
EPSS 0.48% chance in 30 days

Waratek protection

Protected by Waratek

Waratek has a rule that blocks attacks on this vulnerability.

Protection full XXE
Action available security rule
Review automated Inferred
Record active

Decided by	A vulnerability class already blocked by an ARMR security rule
Finding	Protected by Waratek's ARMR xxe security rule, which blocks this class of attack at the JVM level without a rule written for this CVE specifically. The CVE's weakness is CWE-611: XML External Entity Reference.

Decided by

A vulnerability class already blocked by an ARMR security rule

Finding

Protected by Waratek's ARMR xxe security rule, which blocks this class of attack at the JVM level without a rule written for this CVE specifically. The CVE's weakness is CWE-611: XML External Entity Reference.

How to mitigate CVE-2023-6836

Upgrade the affected software to 4.7.24 or later. Until you can, Waratek RASP blocks exploitation with its XXE rule. It runs inside the Java application, with no code changes.

Waratek RASP Runtime protection for Java applications

CVSS

7.5 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

Version Score Band Vector Assigner Type

CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N NVD Primary published

CVSS 3.1 4.6 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N WSO2 Secondary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.1	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`	NVD	Primary	published
CVSS 3.1	4.6	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N`	WSO2	Secondary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev

Package Introduced Fixed Last affected

org.wso2.carbon.commons:org.wso2.carbon.ntask.core 0 4.7.24 unbounded

org.wso2.am:wso2am 0 4.0.0-beta unbounded

org.wso2.carbon.registry:org.wso2.carbon.registry.extensions 0 4.7.31 unbounded

org.wso2.carbon.event-processing:org.wso2.carbon.event.processor.core 0 2.2.12 unbounded

org.wso2.carbon.analytics-common:org.wso2.carbon.event.input.adapter.core 0 5.2.23 unbounded

org.wso2.carbon.governance:org.wso2.carbon.governance.common 0 4.8.13 unbounded

Package	Fixed	Last affected
`org.wso2.carbon.commons:org.wso2.carbon.ntask.core`	`4.7.24`	unbounded
`org.wso2.am:wso2am`	`4.0.0-beta`	unbounded
`org.wso2.carbon.registry:org.wso2.carbon.registry.extensions`	`4.7.31`	unbounded
`org.wso2.carbon.event-processing:org.wso2.carbon.event.processor.core`	`2.2.12`	unbounded
`org.wso2.carbon.analytics-common:org.wso2.carbon.event.input.adapter.core`	`5.2.23`	unbounded
`org.wso2.carbon.governance:org.wso2.carbon.governance.common`	`4.8.13`	unbounded

Products and versions

13 products, 20 version entries

Source	Vendor	Product	Scheme	Affected versions
osv	org.wso2.am	wso2am	generic	＜ 4.0.0
osv	org.wso2.carbon.analytics-common	org.wso2.carbon.event.input.adapter.core	generic	＜ 5.2.23
osv	org.wso2.carbon.commons	org.wso2.carbon.ntask.core	generic	＜ 4.7.24
osv	org.wso2.carbon.event-processing	org.wso2.carbon.event.processor.core	generic	＜ 2.2.12
osv	org.wso2.carbon.governance	org.wso2.carbon.governance.common	generic	＜ 4.8.13
osv	org.wso2.carbon.registry	org.wso2.carbon.registry.extensions	generic	＜ 4.7.31
nvd	wso2	api manager	generic	≤ 3.0.0
nvd	wso2	api manager analytics	generic	2.2.0 · 2.5.0
nvd	wso2	api microgateway	generic	2.2.0
nvd	wso2	enterprise integrator	generic	≤ 6.6.0
nvd	wso2	identity server	generic	5.4.0 · 5.4.1 · 5.5.0 · 5.6.0
nvd	wso2	identity server as key manager	generic	5.0.0 · 5.6.0 · 5.7.0 · 5.9.0
nvd	wso2	micro integrator	generic	1.0.0

Source

Vendor

Product

Scheme

Affected versions

osv

org.wso2.am

wso2am

generic

＜ 4.0.0

osv

org.wso2.carbon.analytics-common

org.wso2.carbon.event.input.adapter.core

generic

＜ 5.2.23

osv

org.wso2.carbon.commons

org.wso2.carbon.ntask.core

generic

＜ 4.7.24

osv

org.wso2.carbon.event-processing

org.wso2.carbon.event.processor.core

generic

＜ 2.2.12

osv

org.wso2.carbon.governance

org.wso2.carbon.governance.common

generic

＜ 4.8.13

osv

org.wso2.carbon.registry

org.wso2.carbon.registry.extensions

generic

＜ 4.7.31

nvd

wso2

api manager

generic

≤ 3.0.0

nvd

wso2

api manager analytics

generic

2.2.0 · 2.5.0

nvd

wso2

api microgateway

generic

2.2.0

nvd

wso2

enterprise integrator

generic

≤ 6.6.0

nvd

wso2

identity server

generic

5.4.0 · 5.4.1 · 5.5.0 · 5.6.0

nvd

wso2

identity server as key manager

generic

5.0.0 · 5.6.0 · 5.7.0 · 5.9.0

nvd

wso2

micro integrator

generic

1.0.0

References

URL	Tags
https://github.com/wso2/carbon-analytics-common/commit/9478336859306d3ea13b25cb386f29c183707fde	WEB
https://github.com/wso2/carbon-commons/commit/a08a587e3dd5146121a7b47a0fdd06ddbcd903f4	WEB
https://github.com/wso2/carbon-event-processing/commit/e9953afd46a45f704de341a081f710cbdfa3f975	WEB
https://github.com/wso2/carbon-governance/commit/ad36968d5a11d4fc35fa5cc4e8b5ae9a04e5bb4c	WEB
https://github.com/wso2/carbon-registry/commit/738b2a0b3e5f118527da236467ed72d9fd9ce40e	WEB
https://github.com/wso2/product-apim/commit/96e8f5d6566d57bbbb8d4257f6f55057a79d00b5	WEB
https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2021/WSO2-2020-0716	WEB
https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2021/WSO2-2020-0716/	Vendor Advisory

URL

Timeline

Published	2023-12-15	By the CVE Program.
NVD record modified	2026-06-17	NVD's own last-modified date for this record.

Published

2023-12-15

By the CVE Program.

NVD record modified

2026-06-17

NVD's own last-modified date for this record.

How VRT decided (17 of 24 rules ran)

17 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

2 armr-patch-file no match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no match An ARMR security-rule template on disk for this CVE

4 manual-classification no match A researcher's recorded decision for this specific CVE

5 manual classification no match Manual classification of this CVE in the legacy dataset

6 non-java-upstream no match A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component no match The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side no match Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven matched In scope Maven packages: org.wso2.carbon.commons:org.wso2.carbon.ntask.core, org.wso2.am:wso2am, org.wso2.carbon.registry:org.wso2.carbon.registry.extensions, org.wso2.carbon.event-processing:org.wso2.carbon.event.processor.core, org.wso2.carbon.analytics-common:org.wso2.carbon.event.input.adapter.core, org.wso2.carbon.governance:org.wso2.carbon.governance.common

10 cna-maven-package not reached An affected Maven artifact named by the CNA itself

11 known-cpe-product not reached An NVD CPE naming a product ARMR tracks

12 cna-cpe-product not reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

13 oracle-advisory-family not reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

15 non-deployable-product not reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

16 unmatched-product not reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? every rule runs

17 patch-hint no match A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

18 open-source-maven matched Mitigation candidate Open-source Maven artifact indexed by OSV (Maven packages: org.wso2.carbon.commons:org.wso2.carbon.ntask.core, org.wso2.am:wso2am, org.wso2.carbon.registry:org.wso2.carbon.registry.extensions, org.wso2.carbon.event-processing:org.wso2.carbon.event.processor.core, org.wso2.carbon.analytics-common:org.wso2.carbon.event.input.adapter.core, org.wso2.carbon.governance:org.wso2.carbon.governance.common). The source is public, which makes an ARMR patch rule a candidate; nothing here establishes that one can be written.

19 poc-derivable skipped An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit skipped Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match decided it matched Protected by Waratek CWE-611 (XML External Entity Reference) is mitigable by an ARMR xxe security rule.

22 exploited-no-fix-or-poc skipped Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold skipped Medium or Low severity, no CISA or VulnCheck KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

24 no-exploit-published skipped Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

Products the scope rules checked

The products this CVE's record names, and whether VRT tracks each one. The scope rules decided on these.

Vendor Product Tracked CPE Source

wso2 api_manager not tracked cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:*

wso2 api_manager_analytics not tracked cpe:2.3:a:wso2:api_manager_analytics:2.2.0:*:*:*:*:*:*:*

wso2 api_microgateway not tracked cpe:2.3:a:wso2:api_microgateway:2.2.0:*:*:*:*:*:*:*

wso2 enterprise_integrator not tracked cpe:2.3:a:wso2:enterprise_integrator:*:*:*:*:*:*:*:*

wso2 identity_server_as_key_manager not tracked cpe:2.3:a:wso2:identity_server_as_key_manager:5.0.0:*:*:*:*:*:*:*

wso2 identity_server not tracked cpe:2.3:a:wso2:identity_server:5.4.0:*:*:*:*:*:*:*

wso2 micro_integrator not tracked cpe:2.3:a:wso2:micro_integrator:1.0.0:*:*:*:*:*:*:*

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