mefic Ultimate Addons for Contact Form 7 Plugin up to 3.5.51 on WordPress Editor deserialization

Summaryinfo

A vulnerability, which was classified as problematic, has been found in mefic Ultimate Addons for Contact Form 7 Plugin up to 3.5.51. This affects an unknown function of the component Committer. Performing a manipulation results in deserialization. This vulnerability is known as CVE-2026-96833. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in mefic Ultimate Addons for Contact Form 7 Plugin up to 3.5.51. It has been classified as problematic. This affects an unknown functionality of the component Editor. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Editor PHP Object Injection in Ultimate Addons for Contact Form 7 <= 3.5.51 versions.

It is possible to read the advisory at patchstack.com. This vulnerability is uniquely identified as CVE-2026-96833 since 09/23/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/30/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• mefic

Name

• Ultimate Addons for Contact Form 7 Plugin

Version

• 3.5.0
• 3.5.1
• 3.5.2
• 3.5.3
• 3.5.4
• 3.5.5
• 3.5.6
• 3.5.7
• 3.5.8
• 3.5.9
• 3.5.10
• 3.5.11
• 3.5.12
• 3.5.13
• 3.5.14
• 3.5.15
• 3.5.16
• 3.5.17
• 3.5.18
• 3.5.19
• 3.5.20
• 3.5.21
• 3.5.22
• 3.5.23
• 3.5.24
• 3.5.25
• 3.5.26
• 3.5.27
• 3.5.28
• 3.5.29
• 3.5.30
• 3.5.31
• 3.5.32
• 3.5.33
• 3.5.34
• 3.5.35
• 3.5.36
• 3.5.37
• 3.5.38
• 3.5.39
• 3.5.40
• 3.5.41
• 3.5.42
• 3.5.43
• 3.5.44
• 3.5.45
• 3.5.46
• 3.5.47
• 3.5.48
• 3.5.49
• 3.5.50
• 3.5.51

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