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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 23.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 23.91% probability · 98th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 27 June 2014
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- python/python · redhat/software collections · redhat/enterprise linux
- Source
- cve@mitre.org
EPSS 23.9% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://bugs.python.org/issue21766Exploit, Patch, Vendor Advisory
- http://openwall.com/lists/oss-security/2014/06/26/3Mailing List, Third Party Advisory
- https://access.redhat.com/security/cve/cve-2014-4650Third Party Advisory
- http://bugs.python.org/issue21766Exploit, Patch, Vendor Advisory
- http://openwall.com/lists/oss-security/2014/06/26/3Mailing List, Third Party Advisory
- https://access.redhat.com/security/cve/cve-2014-4650Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.