CVE-2023-48940
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 stored cross-site scripting (XSS) vulnerability in /admin.php of DaiCuo v2.5.15 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
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 stored cross-site scripting (XSS) vulnerability exists in the /admin.php endpoint of DaiCuo v2.5.15. Attackers can inject malicious JavaScript or HTML payloads that are persisted on the server and executed when other users access the affected page, potentially compromising admin sessions or stealing credentials.
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= 2.5.15CVSS 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
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 the installed DaiCuo versionLocate the version file or footer in the application. Common paths include version.php, a config file, or check the login page footer for the version number. Alternatively, check the source code for a 'version' constant or variable set to 2.5.15.Affected if The installed version is exactly 2.5.15
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Verify the /admin.php endpoint is accessibleAttempt to access the /admin.php endpoint via HTTP/HTTPS request (e.g., curl https://yourdomain.com/admin.php or visit in a browser). Check if the page loads and requires authentication.Affected if The /admin.php endpoint responds and displays an admin interface
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Determine if user input fields exist in the admin panelLog into the admin panel and navigate to sections where user-supplied data can be submitted, such as form fields, settings, or content management areas. Identify which fields accept and store data that gets rendered back in HTML.Affected if The admin.php page or its included modules contain form fields that accept and persist user input
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Check for stored XSS payloads in the databaseReview application database tables (particularly those associated with user content, settings, or configuration) for suspicious HTML or JavaScript patterns such as <script>, <img onerror=, or javascript: URIs that may indicate a prior exploit attempt.Affected if Unexpected script tags or event handlers are found stored in application data
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Verify if output encoding is applied to stored dataInspect the source code of admin.php and any included files for how user-supplied data is rendered. Look for functions that encode or sanitize output (e.g., htmlspecialchars, strip_tags). If no encoding is found before data is rendered in HTML, the vulnerability is present.Affected if User input is rendered in HTML pages without server-side sanitization or encoding
You are affected if your DaiCuo installation is version 2.5.15 and the /admin.php endpoint accepts and displays user input without sanitization, allowing stored XSS payloads to persist and execute in browsers of other 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 server-side input validation and output encoding/sanitization for all user-supplied data rendered in the admin.php page. Consider adding Content Security Policy (CSP) headers as a defense-in-depth measure.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-48940 — 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-2023-48940 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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