CVE-2023-53934
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 · uneditedA denial of service vulnerability in Kentico Xperience allows attackers to launch DoS attacks via specially crafted requests to the GetResource handler. Improper input validation enables remote attackers to potentially disrupt service availability through maliciously constructed requests.
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 confidenceKentico Xperience contains a denial of service vulnerability in the GetResource handler due to improper input validation. Remote attackers can send specially crafted requests with maliciously constructed input that triggers excessive resource consumption or crashes the service, disrupting availability.
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<= 12.0.98CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 Kentico Xperience versionLocate the Kentico Xperience installation and determine the exact version number, typically found in the CMS or administration interface, or in version files within the installation directoryAffected if The installed version is 12.0.98 or lower
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Verify GetResource handler is exposedCheck if the GetResource handler endpoint is accessible on the server. This is typically a URL path such as /CMSPages/GetResource.aspx or similar GetResource endpoint exposed by the Kentico applicationAffected if The GetResource handler is accessible and responds to requests without authentication or proper validation
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Review request handling configurationExamine the web.config or application configuration files for the GetResource handler settings, specifically looking at how input parameters are processed and whether any input validation or size limits are definedAffected if Input validation is absent or minimal, and no request size restrictions are configured for the GetResource handler
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Monitor for anomalous GetResource requestsReview web server logs, application logs, or WAF/load balancer logs for patterns of unusual or malformed requests to the GetResource endpoint that may indicate exploitation attemptsAffected if Logs show excessive or malformed requests to GetResource that correlate with service degradation or availability issues
A user is affected if their Kentico Xperience version is 12.0.98 or lower AND the GetResource handler is exposed without proper input validation controls in place.
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 dataImplement proper input validation and sanitization on the GetResource handler to reject malformed requests. Apply rate limiting and request size restrictions as compensating controls until the vendor patch is applied.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-53934 — 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-2023-53934 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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- 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
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