How severe is CVE-2023-28667?

CVE-2023-28667 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-28667 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28667?

CVE-2023-28667 affects Leadgenerated Lead Generated. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28667?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-28667 published?

CVE-2023-28667 was published on 2023-03-22 and last updated on 2026-06-17.

CVE-2023-28667

CVE-2023-28667 is a critical-severity vulnerability in Leadgenerated Lead Generated with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Leadgenerated Lead Generated
Published: 2023-03-22
Last modified: 2026-06-17

Description

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 granted a POP chain is also present.

Frequently asked questions

What is CVE-2023-28667?: 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 granted a POP chain is also present.
How severe is CVE-2023-28667?: CVE-2023-28667 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-28667 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28667?: CVE-2023-28667 affects Leadgenerated Lead Generated. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28667?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-28667 published?: CVE-2023-28667 was published on 2023-03-22 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2023-7

Affected products (1)

cpe:2.3:a:leadgenerated:lead_generated:*:*:*:*:*:wordpress:*:*

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