CVE-2026-49104
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 Integration for Keap/infusionsoft and Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms <= 1.2.1 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 confidenceUnauthenticated PHP Object Injection vulnerability in the Integration for Keap/infusionsoft WordPress plugin (versions <= 1.2.1), allowing remote attackers to inject malicious PHP objects via unsafe deserialization without authentication, potentially leading to remote 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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/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 plugin is installedNavigate to WordPress admin > Plugins and look for 'Integration for Keap/infusionsoft' or 'infusionsoft' in the installed plugins listAffected if The plugin appears in the installed plugins list
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Check installed plugin versionClick on the plugin in WordPress admin to view its details, or inspect the plugin's main PHP file header for 'Version:' tag, or use WP-CLI: wp plugin list --name='integration-for-keap-infusionsoft'Affected if Version displayed is 1.2.1 or lower, or no version is shown and the plugin file indicates an old release
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Identify vulnerable code locationExamine the plugin directory (wp-content/plugins/integration-for-keap-infusionsoft) for files containing unserialize(), eval(), or similar deserialization functions, particularly in AJAX or API handlersAffected if Files with unsafe unserialize() calls exist and are part of the installed plugin version
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Verify unauthenticated access exposureTest if the vulnerable endpoint is accessible without authentication by making a request to known plugin AJAX hooks (like wp_ajax_*) or public callback URLs without providing valid credentialsAffected if The vulnerable deserialization code can be reached without logging into WordPress
Your environment is affected if the Integration for Keap/infusionsoft plugin is installed at version 1.2.1 or lower and the unsafe deserialization code is accessible without authentication.
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 Integration for Keap/infusionsoft plugin to version greater than 1.2.1 immediately. If no patched version is available, disable the plugin and consider alternative solutions.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,848.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-49104 — 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-2026-49104 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
- No spam, self-promotion, credentials, or personal data