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Deserialization of Untrusted DataWeakness · CWE-502

CVE-2026-56031

HIGH · 8.1 CVSS v3.1 Published 2026-06-26
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
90/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click 8 weeks old

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
Unauthenticated PHP Object Injection in Uncanny Automator <= 7.3.1.2 versions.

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 confidence

Unauthenticated PHP Object Injection vulnerability in Uncanny Automator WordPress plugin versions 7.3.1.2 and below allows remote attackers to inject malicious PHP objects through untrusted input processed by PHP's unserialize() function, potentially enabling remote code execution via POP chain exploitation.

MitigationUpdate Uncanny Automator plugin to a version newer than 7.3.1.2 as provided by the vendor, or apply vendor-supplied security patch; verify no conflicting custom automations exist before deployment.

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
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/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 checks

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

  1. Confirm Uncanny Automator plugin is installed
    Navigate to WordPress admin > Plugins and locate 'Uncanny Automator' in the list, or run: wp plugin list --name='uncanny-automator'
    Affected if Plugin is not installed
  2. Check installed version against affected range
    In WordPress admin > Plugins, click 'View Details' on Uncanny Automator to see the version number, or run: wp plugin get uncanny-automator --field=version
    Affected if Version is 7.3.1.2 or below (vulnerable)
  3. Identify exposed endpoints that process serialized input
    Review plugin files for unserialize() calls handling user-supplied data, or grep plugin directory for 'unserialize' patterns: grep -r "unserialize" wp-content/plugins/uncanny-automator/
    Affected if unserialize() processes untrusted input without validation
  4. Check if vulnerable endpoints are unauthenticated
    Test whether public-facing routes exist that trigger the vulnerable unserialize() call; inspect plugin code for capability checks or nonce protections on affected functions
    Affected if No authentication or authorization enforces access to the vulnerable code path

Environment is affected if Uncanny Automator plugin version 7.3.1.2 or lower is installed AND the plugin exposes a publicly accessible endpoint that processes untrusted input through PHP's unserialize() function.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update Uncanny Automator plugin to a version newer than 7.3.1.2 as provided by the vendor, or apply vendor-supplied security patch; verify no conflicting custom automations exist before deployment.

Recommended fix Moderate confidence

Uncanny Automator version greater than 7.3.1.2 (latest stable release)

  1. 1. Log in to your WordPress admin dashboard
  2. 2. Navigate to Plugins > Installed Plugins
  3. 3. Locate the Uncanny Automator plugin
  4. 4. If an update is available, click 'Update Now' to update to the latest version which contains the fix for this vulnerability
  5. 5. If automatic updates are not available, manually download the latest version from the WordPress plugin repository or from Uncanny Automator's official website
  6. 6. Deactivate the current version of the plugin
  7. 7. Delete the current plugin files
  8. 8. Upload and install the new version
Caveat Review plugin settings and automations after upgrade as minor behavioral changes may occur in any plugin update

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing4.0 h
  • Review / QA2.0 h
9.0 hours of engineering $1,540
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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-2026-56031 in production — separate from our analysis above.

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What this is

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