CVE-2025-24562
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 · uneditedCross-Site Request Forgery (CSRF) vulnerability in Optimal Access KBucket kbucket allows Stored XSS.This issue affects KBucket: from n/a through <= 4.1.6.
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 confidenceCross-Site Request Forgery (CSRF) vulnerability in Optimal Access KBucket allows attackers to craft malicious requests that result in Stored XSS. An authenticated user tricked into visiting a malicious site can have XSS payloads stored in the KBucket application, affecting versions through 4.1.6.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
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 KBucket installationLocate the KBucket application on your system. Check for the application directory, service, or web interface. Common locations include /opt/kbucket, /var/www/kbucket, or check running services for kbucket processes.Affected if KBucket is installed and accessible
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Determine installed versionCheck the KBucket version number. This is typically found in: the application's About page, a version file (VERSION, version.txt, or similar in the installation directory), the application's configuration file, or the HTTP response headers when accessing the web interface. Compare this version to 4.1.6.Affected if The installed version is 4.1.6 or any earlier version (e.g., 4.1.5, 4.0.x, 3.x)
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Verify CSRF protection presenceInspect the application's forms and state-changing endpoints (POST requests). Check the HTML source of forms for the presence of anti-CSRF tokens (often named _token, csrf_token, csrftoken, or similar). Test by submitting a form without any token and observing if the request is accepted.Affected if Forms and state-changing operations lack anti-CSRF token validation or the request is accepted without a token
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Test for stored XSS via CSRFCreate a malicious HTML page that automatically submits a crafted POST request to the KBucket application with an XSS payload in an input field (such as a comment, title, or user input field). Host this page and have an authenticated KBucket user visit it. Then check if the payload is stored and executed when viewing the affected area.Affected if XSS payloads can be stored in KBucket without proper CSRF protection and without input validation/output encoding
You are affected if KBucket is installed with version 4.1.6 or earlier AND the application lacks anti-CSRF token protection on state-changing operations, allowing external sites to inject stored XSS payloads via authenticated users.
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 anti-CSRF tokens for state-changing operations and apply proper input validation and output encoding to prevent stored XSS attacks.
- 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-2025-24562 — 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-2025-24562 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
- No spam, self-promotion, credentials, or personal data