Vulnerabilities (CVE)

Filtered by vendor Python Subscribe
Filtered by product Python
Total 142 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2016-9063 3 Debian, Mozilla, Python 3 Debian Linux, Firefox, Python 2026-06-17 7.5 HIGH 9.8 CRITICAL
An integer overflow during the parsing of XML using the Expat library. This vulnerability affects Firefox < 50.
CVE-2016-5699 1 Python 1 Python 2026-06-17 4.3 MEDIUM 6.1 MEDIUM
CRLF injection vulnerability in the HTTPConnection.putheader function in urllib2 and urllib in CPython (aka Python) before 2.7.10 and 3.x before 3.4.4 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in a URL.
CVE-2016-5636 1 Python 1 Python 2026-06-17 10.0 HIGH 9.8 CRITICAL
Integer overflow in the get_data function in zipimport.c in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 allows remote attackers to have unspecified impact via a negative data size value, which triggers a heap-based buffer overflow.
CVE-2016-4472 4 Canonical, Libexpat Project, Mcafee and 1 more 4 Ubuntu Linux, Libexpat, Policy Auditor and 1 more 2026-06-17 6.8 MEDIUM 8.1 HIGH
The overflow protection in Expat is removed by compilers with certain optimization settings, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted XML data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1283 and CVE-2015-2716.
CVE-2016-3189 2 Bzip, Python 2 Bzip2, Python 2026-06-17 4.3 MEDIUM 6.5 MEDIUM
Use-after-free vulnerability in bzip2recover in bzip2 1.0.6 allows remote attackers to cause a denial of service (crash) via a crafted bzip2 file, related to block ends set to before the start of the block.
CVE-2016-2183 6 Cisco, Nodejs, Openssl and 3 more 9 Content Security Management Appliance, Node.js, Openssl and 6 more 2026-06-17 5.0 MEDIUM 7.5 HIGH
The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday bound of approximately four billion blocks, which makes it easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as demonstrated by an HTTPS session using Triple DES in CBC mode, aka a "Sweet32" attack.
CVE-2016-1000110 3 Debian, Fedoraproject, Python 3 Debian Linux, Fedora, Python 2026-06-17 5.8 MEDIUM 6.1 MEDIUM
The CGIHandler class in Python before 2.7.12 does not protect against the HTTP_PROXY variable name clash in a CGI script, which could allow a remote attacker to redirect HTTP requests.
CVE-2016-0772 1 Python 1 Python 2026-06-17 5.8 MEDIUM 6.5 MEDIUM
The smtplib library in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 does not return an error when StartTLS fails, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."
CVE-2016-0718 9 Apple, Canonical, Debian and 6 more 14 Mac Os X, Ubuntu Linux, Debian Linux and 11 more 2026-06-17 7.5 HIGH 9.8 CRITICAL
Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow.
CVE-2015-5652 2 Microsoft, Python 2 Windows, Python 2026-06-17 7.2 HIGH N/A
Untrusted search path vulnerability in python.exe in Python through 3.5.0 on Windows allows local users to gain privileges via a Trojan horse readline.pyd file in the current working directory. NOTE: the vendor says "It was determined that this is a longtime behavior of Python that cannot really be altered at this point."
CVE-2015-20107 3 Fedoraproject, Netapp, Python 5 Fedora, Active Iq Unified Manager, Ontap Select Deploy Administration Utility and 2 more 2026-06-17 8.0 HIGH 7.6 HIGH
In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided filenames or arguments). The fix is also back-ported to 3.7, 3.8, 3.9
CVE-2015-1283 8 Canonical, Debian, Google and 5 more 13 Ubuntu Linux, Debian Linux, Chrome and 10 more 2026-06-17 6.8 MEDIUM N/A
Multiple integer overflows in the XML_GetBuffer function in Expat through 2.1.0, as used in Google Chrome before 44.0.2403.89 and other products, allow remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted XML data, a related issue to CVE-2015-2716.
CVE-2014-9365 2 Apple, Python 2 Mac Os X, Python 2026-06-17 5.8 MEDIUM N/A
The HTTP clients in the (1) httplib, (2) urllib, (3) urllib2, and (4) xmlrpclib libraries in CPython (aka Python) 2.x before 2.7.9 and 3.x before 3.4.3, when accessing an HTTPS URL, do not (a) check the certificate against a trust store or verify that the server hostname matches a domain name in the subject's (b) Common Name or (c) subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
CVE-2014-7185 2 Apple, Python 2 Mac Os X, Python 2026-06-17 6.4 MEDIUM N/A
Integer overflow in bufferobject.c in Python before 2.7.8 allows context-dependent attackers to obtain sensitive information from process memory via a large size and offset in a "buffer" function.
CVE-2014-4650 2 Python, Redhat 3 Python, Enterprise Linux, Software Collections 2026-06-17 7.5 HIGH 9.8 CRITICAL
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.
CVE-2014-4616 4 Opensuse, Opensuse Project, Python and 1 more 4 Opensuse, Opensuse, Python and 1 more 2026-06-17 4.3 MEDIUM 5.9 MEDIUM
Array index error in the scanstring function in the _json module in Python 2.7 through 3.5 and simplejson before 2.6.1 allows context-dependent attackers to read arbitrary process memory via a negative index value in the idx argument to the raw_decode function.
CVE-2014-2667 1 Python 1 Python 2026-06-17 3.3 LOW N/A
Race condition in the _get_masked_mode function in Lib/os.py in Python 3.2 through 3.5, when exist_ok is set to true and multiple threads are used, might allow local users to bypass intended file permissions by leveraging a separate application vulnerability before the umask has been set to the expected value.
CVE-2014-1912 2 Apple, Python 2 Mac Os X, Python 2026-06-17 7.5 HIGH N/A
Buffer overflow in the socket.recvfrom_into function in Modules/socketmodule.c in Python 2.5 before 2.7.7, 3.x before 3.3.4, and 3.4.x before 3.4rc1 allows remote attackers to execute arbitrary code via a crafted string.
CVE-2014-0224 9 Fedoraproject, Filezilla-project, Mariadb and 6 more 20 Fedora, Filezilla Server, Mariadb and 17 more 2026-06-17 5.8 MEDIUM 7.4 HIGH
OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCipherSpec messages, which allows man-in-the-middle attackers to trigger use of a zero-length master key in certain OpenSSL-to-OpenSSL communications, and consequently hijack sessions or obtain sensitive information, via a crafted TLS handshake, aka the "CCS Injection" vulnerability.
CVE-2013-7440 1 Python 1 Python 2026-06-17 4.3 MEDIUM 5.9 MEDIUM
The ssl.match_hostname function in CPython (aka Python) before 2.7.9 and 3.x before 3.3.3 does not properly handle wildcards in hostnames, which might allow man-in-the-middle attackers to spoof servers via a crafted certificate.