CVE-2026-39550
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 · uneditedDeserialization of Untrusted Data vulnerability in Elated-Themes Aperitif allows Object Injection. This issue affects Aperitif: from n/a through 1.6.
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 confidenceA PHP Object Injection vulnerability exists in the Aperitif theme due to insecure deserialization of untrusted data. This type of flaw allows attackers to manipulate PHP object sequences, potentially triggering magic methods to achieve remote code execution, file operations, or other attacks depending on available gadget chains within the application or loaded plugins.
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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Confirm Aperitif theme is in useSearch your web application directories for the Aperitif theme folder, typically found in wp-content/themes/ for WordPress or similar theme directories for other platforms. Check your CMS theme listing to confirm the theme is active.Affected if The Aperitif theme is installed and active in the application.
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Identify the installed theme versionLocate the style.css file or theme.json within the Aperitif theme directory and read the Version header. Compare this version against any official release notes from the theme developer.Affected if The installed version has not received a security patch for the insecure deserialization vulnerability.
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Locate unserialize() calls in theme codeSearch the Aperitif theme directory recursively for PHP files containing the string 'unserialize('. Use grep or similar: grep -r "unserialize" /path/to/aperitif-theme/Affected if The theme contains PHP code that calls unserialize() on any input source.
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Verify if unserialize processes user inputFor each unserialize() call found, examine whether the data being deserialized originates from $_GET, $_POST, $_COOKIE, $_REQUEST, or any other user-supplied source. Trace the data flow from input to the unserialize call.Affected if User-controllable data from HTTP request parameters or cookies is passed directly to unserialize() without validation.
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Review access logs for exploitation indicatorsExamine web server access logs for patterns suggesting exploitation attempts, such as requests containing serialized PHP objects in query parameters, POST body, or cookies. Look for known PHP gadget chain patterns or suspicious serialized payloads.Affected if Log analysis reveals attempts to inject malicious serialized objects or evidence of successful deserialization attacks.
You are affected if the Aperitif theme is installed, contains unserialize() calls that process user-supplied input without validation, and the installed version lacks a security patch for this vulnerability.
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 Aperitif theme to the latest patched version from the vendor. If no patch is available, disable the theme and review code for insecure unserialize() calls on user-controlled input.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39550 — 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-2026-39550 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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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.
- 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
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