CVE-2026-40760
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 · uneditedUnauthenticated PHP Object Injection in Behold <= 1.5 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 confidenceUnauthenticated PHP Object Injection vulnerability in Behold plugin versions 1.5 and below allows remote attackers to inject malicious PHP objects via unsafe deserialization of user-supplied data, potentially leading to arbitrary code execution.
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 checksWork through these to decide whether this CVE applies to you.
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Identify if Behold plugin is installedCheck your WordPress or CMS plugin directory for the Behold plugin. In the filesystem, look for a folder named 'behold' or similar under the plugins directory.Affected if The Behold plugin folder exists in the system plugins directory.
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Determine the installed Behold plugin versionCheck the main plugin file (commonly plugin.php or index.php inside the Behold folder) for the version comment or header. Alternatively, query the plugin via the CMS admin interface if available.Affected if The reported version is 1.5 or lower, or the version cannot be determined (indicating an old or unversioned release).
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Locate unsafe deserialization in plugin codeSearch the Behold plugin source files for uses of unserialize() on input that could come from user requests, such as $_GET, $_POST, $_REQUEST, or cookie values. Review any AJAX handlers or front-end endpoints.Affected if Code contains unserialize() calls processing untrusted user-supplied data without prior validation or sanitization.
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Verify exposure to unauthenticated usersDetermine whether the vulnerable code paths are reachable without authentication. Check if any of the affected unserialize() calls are in functions accessible to visitors or unauthenticated users (no login required).Affected if The unsafe deserialization can be triggered by unauthenticated (not logged-in) users via direct HTTP requests.
You are affected if Behold plugin version 1.5 or lower is installed AND the plugin contains unserialize() calls on user-supplied input that are reachable by unauthenticated users.
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.
dbcve · scopedUpgrade Behold to a version beyond 1.5 that includes patched code, or disable the plugin until a fix is available. Avoid using unserialize() on untrusted input.
Behold > 1.5 (latest stable release)
- 1. Identify the current installed version of Behold CMS/plugin on your system
- 2. Check if the current version is <= 1.5 (vulnerable)
- 3. Obtain the latest stable release of Behold from the official vendor repository
- 4. Backup the current installation including database and configuration files
- 5. Deploy the updated Behold version following the vendor's upgrade documentation
- 6. Verify the patch was successfully applied by checking the version number
- 7. Test that legitimate functionality continues to work as expected
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-40760 — 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-2026-40760 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