shapedplugin Smart Post Show Plugin up to 3.0.12 on WordPress Shortcode import_shortcodes deserialization

Summaryinfo

A vulnerability categorized as problematic has been discovered in shapedplugin Smart Post Show Plugin up to 3.0.12 on WordPress. This affects the function import_shortcodes of the component Shortcode Handler. Such manipulation leads to deserialization. This vulnerability is referenced as CVE-2026-3017. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in shapedplugin Smart Post Show Plugin up to 3.0.12 on WordPress and classified as problematic. Affected by this issue is the function import_shortcodes of the component Shortcode Handler. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The Smart Post Show – Post Grid, Post Carousel & Slider, and List Category Posts plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.0.12 via deserialization of untrusted input in the import_shortcodes() function. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.

The weakness was published by Vilaysone Chanthavong. The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2026-3017 since 02/23/2026. The exploitation is known to be easy. The attack may be launched remotely. The exploitation requires an enhanced level of successful authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/14/2026).

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• shapedplugin

Name

• Smart Post Show Plugin

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10
• 3.0.11
• 3.0.12

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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