CVE-2023-4971: The Weaver Xtreme Theme Support WordPress plugin before 6.3.1 unserialises the content of an imported file, wh

Q: How do I fix CVE-2023-4971?

weaver xtreme theme support: upgrade to 6.3.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-4971 being exploited?

CVE-2023-4971 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-4971 affect?

CVE-2023-4971 affects weaver xtreme theme support. Severity is high (CVSS 7.2). 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

Q: How urgent is CVE-2023-4971?

Priority 47/100. High severity; Public exploit reference

This month

HIGH 7.2UPGRADE

CVE-2023-4971 is a high-severity flaw (CVSS 7.2) affecting weaver xtreme theme support. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-502
Published	2023-10-16
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: weavertheme

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-10-16 20:15 UTCPublished CVE record published
2026-06-17 06:39 UTCUpdated Record last modified

weavertheme weaver xtreme theme support UPGRADE

Affected: < 6.3.1

Fixed in: 6.3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy weaver-xtreme-theme-support || rpm -q weaver-xtreme-theme-support || weaver-xtreme-theme-support --version

2. UPGRADE to 6.3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade weaver-xtreme-theme-support

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade weaver-xtreme-theme-support

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-4971?

weaver xtreme theme support: upgrade to 6.3.1. Exact commands for each OS are on this page.

Is CVE-2023-4971 being exploited?

CVE-2023-4971 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-4971 affect?

CVE-2023-4971 affects weaver xtreme theme support. Severity is high (CVSS 7.2). 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

How urgent is CVE-2023-4971?

Priority 47/100. High severity; Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

Related CVEs

CVE-2024-4939 MEDIUM 6.4 UPGRADE The Weaver Xtreme Theme Support plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plug
CVE-2023-6990 MEDIUM 5.4 UPGRADE The Weaver Xtreme theme for WordPress is vulnerable to Stored Cross-Site Scripting via custom post meta in all

References

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