CVE-2014-4650
CVSS v3
9.8
CRITICAL
EPSS Score
24.7 %
exploit probability, as of 2026-10-05
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The CGIHTTPServer module in Python 2.7.5 and 3.3.4 does not properly handle URLs in which URL encoding is used for path separators, which allows remote attackers to read script source code or conduct directory traversal attacks and execute unintended code via a crafted character sequence, as demonstrated by a %2f separator.
Technical details
- Published
- 2020-02-20
- Exploit-DB
- EDB-33894
Frequently asked questions
What is CVE-2014-4650?
The CGIHTTPServer module in Python 2.7.5 and 3.3.4 does not properly handle URLs in which URL encoding is used for path separators, which allows remote attackers to read script source code or conduct directory traversal attacks and execute unintended code via a crafted character sequence, as demonstrated by a %2f separator.
Is CVE-2014-4650 actively exploited?
Active exploitation of CVE-2014-4650 has not been confirmed. Its EPSS score was 24.7% on 2026-10-05, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2014-4650?
CVE-2014-4650 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2014-4650 affecting your environment?
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