CVE-2025-3776
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 · uneditedThe Verification SMS with TargetSMS plugin for WordPress is vulnerable to limited Remote Code Execution in all versions up to, and including, 1.5 via the 'targetvr_ajax_handler' function. This is due to a lack of validation on the type of function that can be called. This makes it possible for unauthenticated attackers to execute any callable function on the site, such as phpinfo().
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 confidenceThe Verification SMS with TargetSMS WordPress plugin (versions up to 1.5) contains an unauthenticated Remote Code Execution vulnerability in the targetvr_ajax_handler function. The function lacks validation on callable functions, allowing attackers to invoke arbitrary PHP functions such as phpinfo() without authentication.
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
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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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Verify the TargetSMS plugin is installedCheck your WordPress plugins directory or the Plugins page in wp-admin for 'Verification SMS with TargetSMS' or 'targetsms'Affected if The plugin appears in your installed plugins list
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Identify the installed plugin versionNavigate to Plugins > Installed Plugins > Verification SMS with TargetSMS and read the version number displayed beneath the plugin nameAffected if The version listed is 1.5 or lower, or no version number is displayed (indicating an old installation)
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Confirm the vulnerable ajax endpoint existsCheck if the file wp-content/plugins/verification-sms-with-targetsms/includes/ or similar path contains the targetvr_ajax_handler function by reviewing the plugin source code if accessibleAffected if The targetvr_ajax_handler function is present in the plugin files and responds to admin-ajax.php requests
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Test for unauthenticated function invocationSend a crafted GET or POST request to your site's /wp-admin/admin-ajax.php?action=targetvr_ajax_handler with a parameter that triggers a PHP function call (e.g., a function name parameter) and observe the responseAffected if The server executes arbitrary PHP functions without requiring authentication or validated permissions
You are affected if the Verification SMS with TargetSMS plugin is installed at version 1.5 or lower and the targetvr_ajax_handler endpoint is accessible without authentication, allowing arbitrary PHP function execution.
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 dataUpdate the plugin to version 1.6 or later once available; alternatively, disable the plugin or deploy a WAF rule to block malicious requests to the targetvr_ajax_handler endpoint.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-3776 — 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-2025-3776 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
- No spam, self-promotion, credentials, or personal data