CVE-2023-28667: The Lead Generated WordPress Plugin, version <= 1.23, was affected by an unauthenticated insecure deserializat

Q: How do I fix CVE-2023-28667?

lead generated: upgrade to 1.25. Exact commands for each OS are on this page.

Q: Is CVE-2023-28667 being exploited?

CVE-2023-28667 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-28667 affect?

CVE-2023-28667 affects lead generated. Severity is critical (CVSS 9.8). The Lead Generated WordPress Plugin, version <= 1.23, was affected by an unauthenticated insecure deserialization issue. The tve_labels parameter of the tve_api_form_submit action is passed to the PHP unserialize() function without being sa

Q: How urgent is CVE-2023-28667?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-28667 is a critical-severity flaw (CVSS 9.8) affecting lead generated. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Lead Generated WordPress Plugin, version <= 1.23, was affected by an unauthenticated insecure deserialization issue. The tve_labels parameter of the tve_api_form_submit action is passed to the PHP unserialize() function without being sanitized or verified, and as a result could lead to PHP object injection, which when combined with certain class implementations / gadget chains could be leveraged to perform a variety of malicious actions grant

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-502
Published	2023-03-22
Last modified	2026-06-17

Publisher (CNA): Tenable Network Security, Inc. · Vendor: leadgenerated

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-03-22 21:15 UTCPublished CVE record published
2026-06-17 05:48 UTCUpdated Record last modified

leadgenerated lead generated UPGRADE

Affected: < 1.25

Fixed in: 1.25

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy lead-generated || rpm -q lead-generated || lead-generated --version

2. UPGRADE to 1.25 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade lead-generated

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lead-generated

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-28667?

lead generated: upgrade to 1.25. Exact commands for each OS are on this page.

Is CVE-2023-28667 being exploited?

CVE-2023-28667 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-28667 affect?

CVE-2023-28667 affects lead generated. Severity is critical (CVSS 9.8). The Lead Generated WordPress Plugin, version <= 1.23, was affected by an unauthenticated insecure deserialization issue. The tve_labels parameter of the tve_api_form_submit action is passed to the PHP unserialize() function without being sa

How urgent is CVE-2023-28667?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities · PHP vulnerabilities

References

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