CVE-2025-5881
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 vulnerability was found in code-projects Chat System up to 1.0 and classified as critical. This issue affects some unknown processing of the file /user/confirm_password.php. The manipulation of the argument cid leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
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 · high confidenceSQL injection vulnerability in the /user/confirm_password.php script of the code-projects Chat System (version 1.0 and below). The 'cid' parameter is not properly sanitized before being used in SQL queries, allowing remote attackers to inject malicious SQL syntax and potentially access, modify, or delete database contents.
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= 1.0CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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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Confirm the Chat System installationSearch your web server for files matching 'chat system' or 'fabian chat', or locate the /user/confirm_password.php script in your webrootAffected if The code-projects Chat System or Fabian Chat System is present on the server
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Identify the installed versionCheck for a version file, about page, or footer in the application that displays the version numberAffected if The installed version is 1.0 or lower (including any sub-version like 1.0.1, 0.9, etc.)
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Locate the vulnerable scriptVerify the existence of /user/confirm_password.php in your web application directoryAffected if The file /user/confirm_password.php exists and is accessible via the web server
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Check if the cid parameter is processedReview the confirm_password.php script or test by sending a request with a cid parameter to the endpointAffected if The script processes the 'cid' parameter from user input without proper sanitization
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Inspect the SQL query implementationExamine the confirm_password.php source code for direct use of the cid parameter in SQL queries without prepared statements or parameterizationAffected if The 'cid' parameter is concatenated directly into SQL queries without escaping or parameterized queries
Your environment is affected if the code-projects Chat System (version 1.0 or below) is installed and the /user/confirm_password.php script processes the 'cid' parameter in SQL queries without sanitization or prepared statements.
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 dataReplace all dynamic SQL queries with parameterized queries/prepared statements. Validate and sanitize all user inputs. Apply any vendor security patches immediately. If no patch exists, consider removing or replacing the affected component.
- Consultation6.0 h
- Implementation12.0 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-2025-5881 — 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-2025-5881 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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