What is CVE-2026-25237?

CVE-2026-25237 is a critical-severity vulnerability in Pear Pearweb, classified under CWE-624. CVSS score: 9.8/10. Published 2026-02-03.

How severe is CVE-2026-25237?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Pear Pearweb

CVE-2026-25237

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…

EPSS: 0.004 (31.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Pear Pearweb — versions < 1.33.0

Weakness classification (CWE)

CWE-624

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-25237?: CVE-2026-25237 is a critical-severity vulnerability in Pear Pearweb, classified under CWE-624. CVSS score: 9.8/10. Published 2026-02-03.
How severe is CVE-2026-25237?: Critical severity. CVSS v3 base score is 9.8 out of 10.