8.8

CVE-2023-6933: wordpress better-search-replace Deserialization of Untrusted Data

CVSS: 8.8v3.1HighModified
Published 05-02-2024Last modified 08-04-2026
Open JSON

Vulnerability summary

CVE-2023-6933 is a high (CVSS 8.8) Deserialization of Untrusted Data vulnerability in wordpress better-search-replace. EPSS estimates a 68.05% chance of exploitation in the next 30 days, higher than 99.3% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 1.4.5.

Overall risk
59/100
0100
High · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
68.05%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 05-02-2024
    PublishedVulnerability first disclosed.
  2. 08-04-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

68.05%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 68.05% on 21-09-2026

21-09-202621-10-2026
EPSS score
68.05%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (plugins.trac.wordpress.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Wordpress1 product
  • better-search-replace≤ 1.4.4 (fixed in 1.4.5)
Wpengine1 product

2 vendors · 2 products

References

4 links