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Deserialization of Untrusted DataWeakness · CWE-502

CVE-2026-40751

HIGH · 8.1 CVSS v3.1 Published 2026-06-17
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

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 Ashtanga <= 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 · moderate confidence

Unauthenticated PHP Object Injection in Ashtanga theme/plugin versions 1.2 and below allows remote attackers to inject malicious PHP objects via untrusted input deserialization, potentially leading to remote code execution.

MitigationUpgrade to a patched version of Ashtanga (>1.2) or apply vendor-provided security patches to eliminate the unsafe deserialization vulnerability.

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. Locate Ashtanga installation directory
    Search the web server document root for files named 'ashtanga', ' Ashtanga.php', or theme/plugin files containing 'ashtanga' in the path. Common paths include /wp-content/themes/ or /wp-content/plugins/.
    Affected if The Ashtanga theme or plugin directory is found on the server.
  2. Identify installed Ashtanga version
    Open the main Ashtanga file (typically functions.php, index.php, or a dedicated version file within the Ashtanga directory) and locate the version declaration comment or variable, such as 'Version: x.x' or '$version = 'x.x''.
    Affected if The version returned is 1.2 or lower.
  3. Inspect PHP deserialization usage
    Search all PHP files within the Ashtanga directory for calls to unserialize(), particularly without a second parameter or with user-supplied input (e.g., $_GET, $_POST, $_REQUEST). Use: grep -r "unserialize" /path/to/ashtanga/.
    Affected if unserialize() calls are found processing input directly from superglobals without validation.
  4. Verify unauthenticated input reaches deserialization
    Review the deserialization code identified in step 3 to determine if it processes data from unauthenticated sources (request parameters, cookies, or AJAX endpoints without authentication checks). Look for unserialize($_POST['param']) or similar patterns.
    Affected if Unserialization accepts input without authentication or sanitization.
  5. Check for known deserialization gadget chains
    Examine the application's included files and loaded classes for potential PHP object injection gadget chains (magic methods like __wakeup, __destruct, __toString that could execute code). Search for these method definitions within the Ashtanga codebase.
    Affected if Classes with exploitable magic methods are present and accessible to the deserialization input.

You are affected if Ashtanga version is 1.2 or lower AND the codebase contains unserialize() calls processing unauthenticated user input without validation.

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

Upgrade to a patched version of Ashtanga (>1.2) or apply vendor-provided security patches to eliminate the unsafe deserialization vulnerability.

Recommended fix Moderate confidence

Ashtanga 1.3 or later

  1. Check your currently installed Ashtanga version using your package manager or theme/plugin admin interface
  2. Backup your current installation before making any changes
  3. Upgrade Ashtanga to version 1.3 or later (the first version containing the fix)
  4. Verify the upgrade was successful and the new version is active
  5. Test that the application functions normally post-upgrade
Caveat Review changelog for any breaking changes between 1.2 and 1.3; minor version upgrades typically have minimal breaking changes

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

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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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-2026-40751 in production — separate from our analysis above.

No notes yet

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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
  • 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