CVE-2025-31383
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 sodena FrescoChat Live Chat flexytalk-widget allows Stored XSS.This issue affects FrescoChat Live Chat: from n/a through <= 3.2.6.
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 confidenceA CSRF vulnerability in the FrescoChat Live Chat flexytalk-widget (versions up to 3.2.6) allows attackers to trick authenticated users into executing malicious requests that result in stored XSS payloads being persisted in the chat application. When other users view the injected content, the XSS executes in their browsers.
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 flexytalk-widget installationSearch your web application source code, JavaScript bundles, or frontend dependencies for references to 'flexytalk-widget', 'FrescoChat', or 'FrescoChat Live Chat'Affected if The flexytalk-widget component is present in the application
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Determine installed widget versionExamine the widget JavaScript file, package.json, or embedded script tag for a version string (e.g., '3.2.6' or similar)Affected if The version number is 3.2.6 or lower, or no version is specified indicating an unpatched version
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Verify chat message storage mechanismInspect the network requests sent when submitting chat messages or updating chat configuration; check if the application stores user-supplied content in a database or session storageAffected if User-provided content is stored and can be retrieved and displayed to other users
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Test for CSRF protection on state-changing endpointsSubmit a chat message or configuration change from a cross-origin request (e.g., via curl or a separate browser tab without session cookies) and observe if the request is processed without requiring a CSRF token or SameSite cookieAffected if State-changing operations succeed without requiring a valid CSRF token or SameSite cookie validation
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Confirm stored XSS executionInject a script payload (e.g., <script>alert(1)</script>) into a chat message or widget setting; then view that content from a different user session or page refreshAffected if The injected payload executes in the browser when viewed by other users, indicating missing output encoding
A user is affected if their environment runs the flexytalk-widget version 3.2.6 or lower, processes and stores chat messages without CSRF protection, and displays stored content without proper output encoding.
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. Upgrade to a patched version if available.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-31383 — 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-2025-31383 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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