CVE-2025-26198
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 · uneditedCloudClassroom-PHP-Project v1.0 contains a critical SQL Injection vulnerability in the loginlinkadmin.php component. The application fails to sanitize user-supplied input in the admin login form before directly including it in SQL queries. This allows unauthenticated attackers to inject arbitrary SQL payloads and bypass authentication, gaining unauthorized administrative access. The vulnerability is triggered when an attacker supplies specially crafted input in the username field, such as ' OR '1'='1, leading to complete compromise of the login mechanism and potential exposure of sensitive backend data.
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 confidenceCloudClassroom-PHP-Project v1.0 contains a SQL injection vulnerability in the admin login component (loginlinkadmin.php). The application directly incorporates user input from the username field into SQL queries without sanitization or parameterized queries, allowing attackers to inject arbitrary SQL payloads such as ' OR '1'='1 to bypass authentication and gain full administrative access.
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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Verify CloudClassroom-PHP-Project versionLocate any version file, about page, or header in the application that displays the installed version number. Common locations include a VERSION file, footer on pages, or admin panel about section.Affected if The installed version is 1.0, matching the affected version range.
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Confirm loginlinkadmin.php existsSearch the web root directory for the file loginlinkadmin.php. This is the specific admin login component referenced in the CVE.Affected if The file loginlinkadmin.php exists in the application directory.
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Inspect SQL query in loginlinkadmin.phpOpen loginlinkadmin.php and examine the code handling the username parameter. Look for direct incorporation of the username variable into SQL query strings without using prepared statements, parameter binding, or escaping functions.Affected if The code shows direct string concatenation of user input into SQL queries (e.g., "SELECT * FROM users WHERE username='$username'").
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Check if admin interface is exposedDetermine if the loginlinkadmin.php endpoint is accessible via HTTP/HTTPS from untrusted networks. Check web server configuration and firewall rules.Affected if The admin login page is accessible over the network without additional authentication barriers.
A user is affected if they have CloudClassroom-PHP-Project version 1.0 with the loginlinkadmin.php file present and the application exposes the admin login interface.
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 dynamic SQL query construction with prepared statements/parameterized queries in loginlinkadmin.php, implement strict input validation, and apply the principle of least privilege to the database user account.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-26198 — 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-2025-26198 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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