CVE-2026-25237 PUBLISHED

PEAR is Vulnerable to PHP Code Execution via preg_replace /e in Bug Update Emails

Assigner: GitHub_M
Reserved: 30.01.2026 Published: 03.02.2026 Updated: 03.02.2026

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.

Metrics

CVSS 4.0

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
CVSS Score: 9.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	pear
Product	pearweb
Versions	Version < 1.33.0 is affected

References

https://github.com/pear/pearweb/security/advisories/GHSA-vhw6-hqh9-8r23

Problem Types

CWE-624: Executable Regular Expression Error CWE