CVE-2026-53674
HIGH
7,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH
7,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: high
Description
AI Translation Available
BuddyPress 14.4.0 contains a regular expression injection vulnerability in the activity mention resolver that, when username compatibility mode is enabled, allows attackers to manipulate a REGEXP database clause by crafting mention names containing regex metacharacters. Attackers can submit @mentions whose metacharacters pass through esc_sql unescaped and are inserted into an unprepared REGEXP query against the users table, enabling boolean-based inference of usernames and denial of service through catastrophic backtracking.
943
Improper Neutralization of Special Elements in Data Query Logic
IncompleteCommon Consequences
Security Scopes Affected:
Confidentiality
Integrity
Availability
Access Control
Potential Impacts:
Bypass Protection Mechanism
Read Application Data
Modify Application Data
Varies By Context
Applicable Platforms
All platforms may be affected
https://buddypress.org/
https://wordpress.org/plugins/buddypress/
https://www.vulncheck.com/advisories/buddypress-regexp-injection-via-mention-us…