CVE-2016-3957: WEB2PY

Critical severity, CVSS 9.8. EPSS: 4.9% chance of exploitation in the next 30 days.

The secure_load function in gluon/utils.py in web2py before 2.14.2 uses pickle.loads to deserialize session information stored in cookies, which might allow remote attackers to execute arbitrary code by leveraging knowledge of encryption_key.

Affected products

• WEB2PY WEB2PY: before 2.14.2 (fixed in 2.14.2)

Published 2018-02-06. Last modified 2026-06-17.