# CVE-2023-3360: Weaver Show Posts PHP object injection

Source: https://junglewise.ai/threats/cve-2023-3360-weaver-show-posts-php-object-injection  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-02. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2023-3360 · Severity: low · CVSS 3.3 · Published 2026-09-02

The Weaver Show Posts WordPress plugin allows administrators to import filter configuration files. The plugin unsafely deserializes the contents of uploaded files without validation, enabling a high-privilege user to inject malicious PHP objects that could trigger arbitrary code execution if a suitable gadget chain exists on the WordPress installation.

Vendors: [Weaver](https://junglewise.ai/threats/vendors/weaver).

## Quick answers

**Is CVE-2023-3360 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-3360 being exploited in the wild.

**How severe is CVE-2023-3360?** Low severity, with a CVSS score of 3.3, published 2 September 2026.

**Which products and versions are affected?** Weaver Show Posts before 1.8.1.

**Is there a fix for CVE-2023-3360?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2023-3360 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2023-3360?** Check whether you run Weaver Show Posts at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a PHP object injection (CWE-502) in the file import functionality of Weaver Show Posts. When a user uploads a filter configuration file via the plugin's admin interface, the plugin passes the file content directly to PHP's unserialize() function without validation. An attacker with admin privileges can craft a serialized PHP object that exploits a gadget chain present in WordPress or installed plugins to execute arbitrary code. The attack requires high privilege (admin) user access and depends on the presence of a suitable gadget chain on the target blog. No patch availability information is explicitly stated in the advisory.

## Affected products

- Weaver Show Posts before 1.8.1

## Timeline

- 2023-09-02: disclosed

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://wpscan.com/vulnerability/7f00e126-7c2a-404d-911a-cf5d4c489f5f/](https://wpscan.com/vulnerability/7f00e126-7c2a-404d-911a-cf5d4c489f5f/)