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CVE-2026-53674

BuddyPress 14.4.0 REGEXP Injection via @Mention Username Resolution PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
BuddyPress / BuddyPressaffected 0 through 14.4.0

CWE

CWE-943

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.