CVE-2026-25237 CRITICAL

CVE-2026-25237: PEAR is Vulnerable to PHP Code Execution via preg_replace /e in Bug Update Emails

Vendor Pear
Product pearweb
Weakness CWE-624
Published February 3, 2026
Last update February 4, 2026
View on NVD All CVEs

CVSS base score

9.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

PEAR is a framework and distribution system for reusable PHP components. Prior to version 1.33.0, use of preg_replace() with the /e modifier in bug update email handling can enable PHP code execution if attacker-controlled content reaches the evaluated replacement. This issue has been patched in version 1.33.0.

Key dates

02Disclosure timeline

February 3, 2026 CVE published
February 4, 2026 Record updated