CVE-2026-4508
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 identified in PbootCMS up to 3.2.12. The impacted element is the function checkUsername of the file apps/home/controller/MemberController.php of the component Member Login. The manipulation of the argument Username leads to sql injection. The attack may be initiated remotely. The exploit is publicly available and might 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 PbootCMS Member Login function. The checkUsername function in apps/home/controller/MemberController.php fails to sanitize the Username parameter before using it in SQL queries, allowing remote attackers to inject arbitrary SQL code.
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
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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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Verify PbootCMS installation existsLocate the PbootCMS installation by checking for the presence of the 'apps' directory or common index.php entry point in the web root.Affected if PbootCMS is installed on the server
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Identify installed PbootCMS versionCheck the version.php file typically located in the core directory, or look for a version indicator in the admin panel footer or system information page.Affected if The installed version is lower than 3.2.13 (the fixed version)
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Confirm MemberController.php existsVerify the file 'apps/home/controller/MemberController.php' exists in the installation directory.Affected if The vulnerable file is present in the expected location
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Check if Member Login function is accessibleAttempt to access the login page or user registration page that invokes the checkUsername function, typically at /index.php/Member/login or /index.php/Member/register endpoints.Affected if The Member login/registration functionality is enabled and accessible via web
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Inspect vulnerable checkUsername functionOpen apps/home/controller/MemberController.php and locate the checkUsername function. Examine whether the Username parameter is used directly in SQL queries without parameterization or sanitization.Affected if The code shows direct use of the username parameter in SQL queries without prepared statements or escaping
You are affected if PbootCMS is installed with a version lower than 3.2.13 and the Member login/registration functionality is accessible, with the checkUsername function containing unsanitized SQL query construction.
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 dataUpgrade PbootCMS to version 3.2.13 or later which includes parameterized queries. If immediate upgrade is not possible, implement input validation and consider deploying a WAF rule to block SQL injection patterns in the login endpoint.
- Consultation3.0 h
- Implementation6.0 h
- Testing5.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-4508 — 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-2026-4508 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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