CVE-2023-6836
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMultiple 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceMultiple WSO2 products contain an XML External Entity (XXE) vulnerability that allows attackers to abuse XML parser features to access sensitive information by crafting malicious XML documents with external entity references.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 3.0.0= 2.2.0= 2.5.0= 2.2.0<= 6.6.0= 5.0.0= 5.6.0= 5.7.0= 5.9.0= 5.4.0= 5.4.1= 5.5.0= 5.6.0= 1.0.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed WSO2 productLocate the product-info.xml, version.txt, or carbon.xml file in the WSO2 installation directory. Check the product name entry in these files.Affected if The product name matches any WSO2 product listed in the affected versions.
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Determine installed product versionOpen the version file (typically found in the root of the WSO2 installation as product-version.txt, product-info.xml, or in the repository/conf directory as carbon.xml). Record the exact version number.Affected if The version matches any version in the affected list or falls within the <= ranges specified.
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Confirm XML parser configuration for external entitiesSearch the repository/conf directory for XML parser configuration files (such as axis2.xml, carbon.xml, or parser-related XML files). Look for settings that enable or disable external entity processing (for example, look for entries related to 'externalEntity', 'XXE', or DTD processing).Affected if External entity processing or DTD processing is explicitly enabled or no XXE protection is configured.
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Check for vulnerable XML processing endpointsReview deployed API configurations or any endpoint that accepts XML input. Identify if there are any endpoints that process XML without disabled external entities.Affected if The product accepts XML input through any endpoint without proper XXE protection applied.
A user is affected if they have any of the listed WSO2 product versions installed AND the XML parser has external entity or DTD processing enabled.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataDisable external entity processing and DTD processing in XML parsers, and apply vendor-provided patches for affected WSO2 products.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-6836 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-6836 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data