{"id":"CVE-2011-4940","aliases":["AZL-109590","DEBIAN-CVE-2011-4940","DLA-25-1","EUVD-2011-4850","GHSA-cr6h-6cqx-mw3f","PSF-2012-1","RHSA-2012:0744","RHSA-2012:0745"],"status":"published","title":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5...","description":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.","severity":{"version":"2.0","score":2.6,"vector":"AV:N/AC:H/Au:N/C:N/I:P/A:N","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03177,"percentile":0.88135,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2012-06-27T10:00:00Z","modified":"2026-10-27T05:36:16Z","fixes":[{"ecosystem":"Debian:11","package":"python2.7","fixed_in":["2.7.2-8"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"python-py","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.11.0-1"}]}]},{"source":"osv","ecosystem":"Debian:11","package":"python2.7","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.2-8"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"python2.6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.6-8+deb6u1"}]}],"versions":["2.6.6-8"],"bundled":8},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::client","package":"python","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::client","package":"python-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::client","package":"python-libs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::client","package":"tkinter","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::client","package":"python-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::client","package":"python-test","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::client","package":"python-tools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::computenode","package":"python","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::computenode","package":"python-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::computenode","package":"python-libs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::computenode","package":"python-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::computenode","package":"python-test","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::computenode","package":"python-tools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::computenode","package":"tkinter","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::server","package":"python","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::server","package":"python-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::server","package":"python-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::server","package":"python-libs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::server","package":"tkinter","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::server","package":"python-test","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::server","package":"python-tools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::workstation","package":"python","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::workstation","package":"python-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::workstation","package":"python-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::workstation","package":"python-libs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::workstation","package":"tkinter","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::workstation","package":"python-test","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:6::workstation","package":"python-tools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.6-29.el6_2.2"}]}],"bundled":4},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client","package":"python","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client","package":"python-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client","package":"python-libs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client","package":"python-tools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client","package":"tkinter","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client_workstation","package":"python","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client_workstation","package":"python-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client_workstation","package":"python-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"python","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"python-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"python-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"python-libs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"python-tools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"tkinter","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.3-46.el5_8.2"}]}],"bundled":3}],"products":[{"vendor":"python","product":"python"}],"references":[{"url":"http://www.ubuntu.com/usn/USN-1592-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","advisory"]},{"url":"http://jvn.jp/en/jp/JVN51176027/index.html","tags":["third-party-advisory","x_refsource_JVN","x_transferred","web"]},{"url":"http://secunia.com/advisories/51040","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/50858","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://bugs.python.org/issue11442","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/54083","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://www.ubuntu.com/usn/USN-1596-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","advisory"]},{"url":"http://www.ubuntu.com/usn/USN-1613-2","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","advisory"]},{"url":"http://jvndb.jvn.jp/jvndb/JVNDB-2012-000063","tags":["third-party-advisory","x_refsource_JVNDB","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=803500","tags":["x_refsource_CONFIRM","x_transferred","report"]},{"url":"http://secunia.com/advisories/51024","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://www.ubuntu.com/usn/USN-1613-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4940","tags":["web","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2012:0744","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2012:0745","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-4940","tags":["report"]},{"url":"https://github.com/advisories/GHSA-cr6h-6cqx-mw3f"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-4940","tags":["advisory"]},{"url":"https://bugs.python.org/issue11442","tags":["report"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"http://www.ocert.org/advisories/ocert-2011-003.html","tags":["article"]},{"url":"https://rhn.redhat.com/errata/RHSA-2012-0731.html","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=750555","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=758905","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=789790","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2012/rhsa-2012_0744.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-4940","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-4944","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-4944","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4944","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2012-0845","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2012-0845","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-0845","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2012-1150","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2012-1150","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-1150","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2012/rhsa-2012_0745.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2011-4940","description":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.","status":"published","published":"2012-06-27T10:00:00Z","modified":"2024-08-07T00:23:39.213Z","updated_at":"2026-11-02T14:35:37.671707Z"}],"euvd":[{"id":"EUVD-2011-4850","description":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.","status":"published","published":"2012-06-27T10:00:00Z","modified":"2024-08-07T00:23:39Z","updated_at":"2026-11-03T01:39:47.649601Z"}],"ghsa":[{"id":"GHSA-cr6h-6cqx-mw3f","title":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5...","description":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.","status":"published","published":"2022-05-13T01:31:00Z","modified":"2023-02-02T18:30:29Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:52:47.451891Z"}],"nvd":[{"id":"CVE-2011-4940","description":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.","status":"published","published":"2012-06-27T10:18:36.433Z","modified":"2026-06-16T23:35:39.72Z","cvss":[{"version":"2.0","score":2.6,"vector":"AV:N/AC:H/Au:N/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:02:12.272092Z"}],"osv":[{"id":"AZL-109590","title":"CVE-2011-4940 affecting package python-py 1.11.0-1","description":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.","status":"published","published":"2012-06-27T10:18:36Z","modified":"2026-10-27T05:36:16Z","updated_at":"2026-11-02T15:28:02.044071Z"},{"id":"CVE-2011-4940","description":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.","status":"published","published":"2012-06-27T10:18:36Z","modified":"2026-04-10T03:42:08.860072Z","updated_at":"2026-11-02T15:43:58.279353Z"},{"id":"DEBIAN-CVE-2011-4940","description":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.","status":"published","published":"2012-06-27T10:18:36.433Z","modified":"2026-08-25T02:47:25.444087139Z","updated_at":"2026-11-02T15:45:24.92418Z"},{"id":"DLA-25-1","title":"python2.6 - security update","status":"published","published":"2014-07-31T00:00:00Z","modified":"2026-03-09T01:21:44.220566Z","updated_at":"2026-11-02T15:46:10.712745Z"},{"id":"PSF-2012-1","title":"SimpleHTTPServer UTF-7","description":"The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.","status":"published","published":"2012-06-27T10:00:00Z","modified":"2025-10-09T00:55:35.730926Z","updated_at":"2026-11-02T15:52:50.263679Z"},{"id":"RHSA-2012:0744","title":"Red Hat Security Advisory: python security update","status":"published","published":"2024-09-15T19:50:23Z","modified":"2026-06-26T12:21:41.985259714Z","updated_at":"2026-11-02T15:53:01.495018Z"},{"id":"RHSA-2012:0745","title":"Red Hat Security Advisory: python security update","status":"published","published":"2024-09-15T19:50:27Z","modified":"2026-06-26T12:21:41.962954029Z","updated_at":"2026-11-02T15:53:01.495018Z"}]}}