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Vulnerability record · CVE-2019-9948 · published 23 March 2019

CVE-2019-9948: Python path traversal vulnerability

Python · Python

urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file: URIs, as demonstrated by triggering a urllib.urlopen('local_file:///etc/passwd') call.

9.1 CVSS 3.1 Critical EPSS 12% · top 4.0% CWE-22 · Path traversal
9.1CVSS 3.1 base score, v2 6.4
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
11Affected product versions listed by NVD
44References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file: URIs, as demonstrated by triggering a urllib.urlopen('local_file:///etc/passwd') call.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

11 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00092.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00050.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/107549 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:1700 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2030 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3335 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3520 Third Party Advisory
https://bugs.python.org/issue35907 ExploitIssue TrackingVendor Advisory
https://github.com/python/cpython/pull/11842 PatchThird Party Advisory
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.ap
https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00011.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQEQLXLOCR3SNM3AA5RRYJF
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KRYFIMISZ47NTAU3XWZUOFB
https://seclists.org/bugtraq/2019/Oct/29 Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202003-26 Third Party Advisory
https://security.netapp.com/advisory/ntap-20190404-0004/ Third Party Advisory
https://usn.ubuntu.com/4127-1/ Third Party Advisory
https://usn.ubuntu.com/4127-2/ Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00092.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00050.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/107549 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:1700 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2030 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3335 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3520 Third Party Advisory
https://bugs.python.org/issue35907 ExploitIssue TrackingVendor Advisory
https://github.com/python/cpython/pull/11842 PatchThird Party Advisory
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.ap
https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00011.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQEQLXLOCR3SNM3AA5RRYJF
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KRYFIMISZ47NTAU3XWZUOFB
https://seclists.org/bugtraq/2019/Oct/29 Mailing ListThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-9948), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.