{"cve":"CVE-2016-3953","nvd":{"published":"2018-02-06T18:29:00.273","modified":"2026-06-17T00:46:37.773","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-798"],"references":["https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/","https://github.com/web2py/web2py/blob/R-2.14.1/applications/examples/models/session.py","https://usn.ubuntu.com/4030-1/","https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/","https://github.com/web2py/web2py/blob/R-2.14.1/applications/examples/models/session.py"],"products":["web2py:web2py"],"source":"nvd","synced_at":"2026-10-19T20:48:34.567387330+00:00"},"epss":{"cve":"CVE-2016-3953","score":0.0334,"percentile":0.88654,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-q2rq-qgcf-m22w","url":"https://osv.dev/vulnerability/GHSA-q2rq-qgcf-m22w","summary":"web2py remote code execution via hardcoded encryption key in session.connect function","modified":"2026-06-29T12:26:38.449267094Z","packages":[{"ecosystem":"PyPI","name":"web2py","purl":"pkg:pypi/web2py","ranges":["<2.14.2"],"fixed":["2.14.2"]}]},{"id":"PYSEC-2026-570","url":"https://osv.dev/vulnerability/PYSEC-2026-570","summary":"web2py remote code execution via hardcoded encryption key in session.connect function","modified":"2026-07-01T20:23:11.781906Z","packages":[{"ecosystem":"PyPI","name":"web2py","purl":"pkg:pypi/web2py","ranges":["<2.14.2"],"fixed":["2.14.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}