CVE-2026-21640

Low · 2.7

CVSS

2.7

EPSS

0.3%

Published

Jan 20, 2026

CISA due date

—

The record

HackerOne community member Faraz Ahmed (PakCyberbot) has reported a format string injection in the Revive Adserver settings. When specific character combinations are used in a setting, the admin user console could be disabled due to a fatal PHP error.

Affected packages

Ecosystem	Package	Introduced	Fixed