PYSEC-2026-570

    Dashboard / Vulnerabilities / PYSEC-2026-570

    PYSEC-2026-570

    Published: 29 Jun 2026Last Modified: 1 Jul 2026

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

    Details: 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: https://nvd.nist.gov/vuln/detail/CVE-2016-3953, https://github.com/web2py/web2py/issues/1205, https://github.com/web2py/web2py/commit/9706d125b42481178d2b423de245f5d2faadbf40, https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957, https://github.com/web2py/web2py, https://github.com/web2py/web2py/blob/R-2.14.1/applications/examples/models/session.py, https://usn.ubuntu.com/4030-1, https://pypi.org/project/web2py, https://github.com/advisories/GHSA-q2rq-qgcf-m22w

    Affected packages

    Package

    Name: web2py

    Purl: pkg:pypi/web2py

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.14.2

    Affected versions

    1.96.4

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High