TI-2023-04576 Aliases CVE-2023-4971 GHSA-q8w9-3c5w-2mhv

Weaver Xtreme Theme Support < 6.3.1 - Admin+ PHP Object Injection

HIGH 67CWE-502Published 2023-10-16 · Updated 2025-04-23

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-502.

Summary

The Weaver Xtreme Theme Support WordPress plugin before 6.3.1 unserialises the content of an imported file, which could lead to PHP object injections issues when a high privilege user import a malicious file and a suitable gadget chain is present on the blog.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01186 68th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix Fixed Weaver Xtreme Theme Support (Unknown): 6.3.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	Weaver Xtreme Theme Support	before 6.3.1	6.3.1	Patch available	CNA

Weaver Xtreme Theme Support VendorUnknown Affected before 6.3.1 Fixed in 6.3.1 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:weavertheme:weaver_xtreme_theme_support::::::wordpress::*	before 6.3.1	Vulnerable	wpweaver

cpe:2.3:a:weavertheme:weaver_xtreme_theme_support:*:*:*:*:*:wordpress:*:* Versions before 6.3.1 Vulnerable ·wpweaver

Remediation

Fix · CNA Weaver Xtreme Theme Support (Unknown) Fixed in 6.3.1

Timeline

2026-10-02 Threatist record created from CVE-2023-4971
2026-10-03 Alias added: GHSA-q8w9-3c5w-2mhv

References

Exploit 1

https://wpscan.com/vulnerability/421194e1-6c3f-4972-8f3c-de1b9d2bcb13

TI-2023-00261 Weaver Xtreme Theme Support < 6.2.7 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
TI-2024-04592 Weaver Xtreme Theme Support <= 6.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via div Shortcode CVSS 3.1MEDIUM 6.4
TI-2023-06391 Weaver Xtreme <= 6.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences