Is CVE-2023-4971 in the CISA KEV catalog?

No. CVE-2023-4971 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-4971?

CVE-2023-4971 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2023-4971?

CVE-2023-4971 has an EPSS score of 0.98% (58th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-4971?

Upgrade weaver xtreme theme support to 6.3.1 or later.

CVE & CISA-KEV Catalog

CVE-2023-4971

HIGH

7.2

CVSS v3

NVD

Description

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.

CWE-502Deserialization of Untrusted Data

How to fix

Remediation Available

weaver xtreme theme supportNVD

Affected:< 6.3.1Fixed in:6.3.1CVE-2023-4971derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.98%probability of exploitation in 30 days

58thpercentile

Moderate risk: more likely to be exploited than 58% of all known CVEs.

References

Exploit1

wpscan.com

Related Vulnerabilities

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-0669	High	7.2	100%	KEV + Ransom	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-35464	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-29300	Critical	9.8	100%	KEV + Ransom	-
CVE-2025-53770	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-47986	Critical	9.8	100%	KEV + Ransom	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-23.