CVE-2016-3957
UnknownEPSS 4.99%
Last modified
CVE-2016-3957 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 4.99% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Web2py | Web2py | < 2.14.2 |
References
- https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/Exploit, Technical Description, Third Party Advisory
- https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200Third Party Advisory
- https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/Exploit, Technical Description, Third Party Advisory
- https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-3957?
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.
How severe is CVE-2016-3957?
Severity scoring for CVE-2016-3957 is pending analysis. The EPSS model estimates a 4.99% probability of exploitation in the next 30 days.
How do I fix CVE-2016-3957?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2016-3957?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST