Better Search Replace <= 1.4.4 - Unauthenticated PHP Object Injection

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Summary

CVECVE-2023-6933
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-02-05 22:15:57 UTC
Updated2026-04-08 18:18:44 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

Problem Types: CWE-502 | CWE-502 CWE-502 Deserialization of Untrusted Data

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Wpengine Better Search Replace All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wpengine Better Search Replace affected 1.4.4 semver Not specified

References

ReferenceSourceLinkTags
www.wordfence.com/threat-intel/vulnerabilities/id/895f2db1-a2ed-4a17-a4f6-cd13e... af854a3a-2127-422b-91ae-364da2661108 www.wordfence.com Third Party Advisory
plugins.trac.wordpress.org/browser/better-search-replace/trunk/includes/class-bsr-db.php af854a3a-2127-422b-91ae-364da2661108 plugins.trac.wordpress.org Exploit
plugins.trac.wordpress.org/changeset/3023674/better-search-replace/trunk/includes/class-... af854a3a-2127-422b-91ae-364da2661108 plugins.trac.wordpress.org Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Sam Pizzey (en)

Additional Advisory Data

SourceTimeEvent
CNA2024-01-24T00:00:00.000ZDisclosed

Legacy QID Mappings

  • 731121 WordPress Better Search Replace Unauthenticated PHP Object Injection Vulnerability
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