web2py remote code execution via hardcoded encryption key in session.connect function

GHSA-q2rq-qgcf-m22w · CVE-2016-3953 · PYSEC-2026-570

Published May 14, 2022 · Modified Jun 29, 2026

Description

The sample web application in web2py before 2.14.2 might allow remote attackers to execute arbitrary code via vectors involving use of a hardcoded encryption key when calling the session.connect function.

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2016-3953
WEB https://github.com/web2py/web2py/issues/1205
WEB https://github.com/web2py/web2py/commit/9706d125b42481178d2b423de245f5d2faadbf40
WEB https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957
PACKAGE https://github.com/web2py/web2py
WEB https://github.com/web2py/web2py/blob/R-2.14.1/applications/examples/models/session.py
WEB https://usn.ubuntu.com/4030-1

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