CVE-2017-17522

Name: CVE-2017-17522
Creator: NVD / NIST
Published: 2017-12-14T16:29:00.713+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.60%

Last modified Jun 17, 2026

CVE-2017-17522 is a vulnerability of currently unknown severity. Lib/webbrowser.py in Python through 3.6.3 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks via a crafted URL. NOTE: a software maintainer indicates that exploitation is impossible because the code relies on subprocess.Popen and the default shell=False setting. EPSS estimates a 3.60% chance of exploitation in the next 30 days.

Description

Lib/webbrowser.py in Python through 3.6.3 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks via a crafted URL. NOTE: a software maintainer indicates that exploitation is impossible because the code relies on subprocess.Popen and the default shell=False setting

Metrics

EPSS Probability

3.60%

88.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Python	Python	<= 3.6.3

References

http://www.securityfocus.com/bid/102207Third Party Advisory, VDB Entry
https://bugs.python.org/issue32367
https://security-tracker.debian.org/tracker/CVE-2017-17522Issue Tracking, Third Party Advisory
http://www.securityfocus.com/bid/102207Third Party Advisory, VDB Entry
https://bugs.python.org/issue32367
https://security-tracker.debian.org/tracker/CVE-2017-17522Issue Tracking, Third Party Advisory

Timeline

Published: Dec 14, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-17522?

How severe is CVE-2017-17522?

Severity scoring for CVE-2017-17522 is pending analysis. The EPSS model estimates a 3.60% probability of exploitation in the next 30 days.

How do I fix CVE-2017-17522?

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.

Are you affected by CVE-2017-17522?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST