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Cross-Site Request Forgery (CSRF)Weakness · CWE-352

CVE-2025-53277

HIGH · 8.8 CVSS v3.1 Published 2025-06-27
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges

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 · unedited
Cross-Site Request Forgery (CSRF) vulnerability in Infigo Software IS-theme-companion weblizar-companion allows Object Injection.This issue affects IS-theme-companion: from n/a through <= 1.59.

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 confidence

Cross-Site Request Forgery (CSRF) vulnerability in the IS-theme-companion (weblizar-companion) WordPress plugin enables remote attackers to trick authenticated administrators into performing unintended actions. The vulnerability allows Object Injection through unsafe deserialization of attacker-controlled data, potentially leading to arbitrary code execution if suitable PHP 'gadget chains' exist in the application or environment.

MitigationImplement anti-CSRF tokens (nonces) on all state-changing admin actions and prevent unsafe deserialization by validating and sanitizing all user input before any unserialization operations. Additionally, disable PHP object serialization/unserialization in user-facing contexts.

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
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 checks

Work through these to decide whether this CVE applies to you.

  1. Verify the IS-theme-companion or weblizar-companion plugin is installed
    Navigate to WordPress admin dashboard > Plugins > Installed Plugins, or inspect the /wp-content/plugins/ directory for folders named 'weblizar-companion', 'is-theme-companion', or similar variants
    Affected if The plugin appears in the installed plugins list and is activated
  2. Check the installed plugin version
    In WordPress admin > Plugins, click on the plugin to view details, or read the main plugin PHP file header for 'Version:' value
    Affected if The installed version matches or falls within the affected version range of the plugin (if known)
  3. Confirm administrator session is required
    Review the plugin functionality to verify that the vulnerable actions are only accessible to authenticated administrators with admin privileges
    Affected if The vulnerable code paths require admin authentication but lack anti-CSRF nonce validation on state-changing operations
  4. Inspect plugin code for unsafe unserialize() calls
    Search plugin PHP files for 'unserialize()' function calls that process data from $_REQUEST, $_POST, or other user-controllable sources without prior validation
    Affected if The plugin contains unserialize() calls operating on attacker-supplied input without sanitization
  5. Check for PHP gadget chain availability
    Review installed themes and other plugins for PHP classes that could serve as gadget chains for object injection, or check if the PHP environment has known unserialize-enabled classes accessible
    Affected if Suitable PHP gadget chains exist in the WordPress environment that could be chained with the unsafe deserialization to achieve code execution

A user is affected if the weblizar-companion/IS-theme-companion plugin is installed and active, the vulnerable version lacks anti-CSRF protection on admin actions, the plugin uses unsafe deserialization on user input, and exploitable PHP gadget chains are present in the environment.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement anti-CSRF tokens (nonces) on all state-changing admin actions and prevent unsafe deserialization by validating and sanitizing all user input before any unserialization operations. Additionally, disable PHP object serialization/unserialization in user-facing contexts.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-53277 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
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  • Version or environment caveats, and links to real fixes
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