Deserialization in Wpengine Better Search Replace

CVE-2023-6933

The Better Search Replace plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.4.4 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.680 (99.3th percentile), scored .

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-6933: held from 0.680 to 0.680.

EPSS over last 30 days · oldest: 0.680 · newest: 0.680 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-6933?
CVE-2023-6933 is a high-severity vulnerability in Wpengine Better Search Replace, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2024-02-05.
How severe is CVE-2023-6933?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-6933 known to be exploited?
6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.