MEDIUM5.5

PYSEC-2026-1062

web2py exposure of sensitive information

Quick fix

PYSEC-2026-1062 — web2py: upgrade to the fixed version with the command below.

pip install --upgrade 'web2py>=2.14.2'

Details

web2py before 2.14.2 allows remote attackers to obtain the session_cookie_key value via a direct request to examples/simple_examples/status. NOTE: this issue can be leveraged by remote attackers to execute arbitrary code using CVE-2016-3957.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/web2py

Introduced in: 0Fixed in: 2.14.2

Fixpip install --upgrade 'web2py>=2.14.2'

References

https://nvd.nist.gov/vuln/detail/CVE-2016-3954[ADVISORY]
https://github.com/web2py/web2py/commit/0820926b500a321060ef6a76ce89fd35a252f8b0[WEB]
https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957[WEB]
https://github.com/web2py/web2py[PACKAGE]
https://usn.ubuntu.com/4030-1[WEB]
https://pypi.org/project/web2py[PACKAGE]
https://github.com/advisories/GHSA-jr83-vr4j-mp6p[ADVISORY]