Description
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.
Exploits (1)
References (3)
Core 3
Core References
Exploit, Technical Description, Third Party Advisory x_refsource_misc
https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/
Third Party Advisory x_refsource_misc
https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4030-1/
Scores
CVSS v3
9.8
EPSS
0.1274
EPSS Percentile
94.0%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-502
Status
published
Products (1)
web2py/web2py
< 2.14.2
Published
Feb 06, 2018
Tracked Since
Feb 18, 2026