CVE-2018-18074

Name: CVE-2018-18074
Creator: NVD / NIST
Published: 2018-10-09T17:29:01.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 7.44%

Last modified Jun 17, 2026

CVE-2018-18074 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The Requests package before 2.20.0 for Python sends an HTTP Authorization header to an http URI upon receiving a same-hostname https-to-http redirect, which makes it easier for remote attackers to discover credentials by sniffing the network.. EPSS estimates a 7.44% chance of exploitation in the next 30 days.

Description

The Requests package before 2.20.0 for Python sends an HTTP Authorization header to an http URI upon receiving a same-hostname https-to-http redirect, which makes it easier for remote attackers to discover credentials by sniffing the network.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

7.44%

93.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-522

Affected Software

Vendor	Product	Versions
Python	Requests	< 2.20.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Opensuse	Leap	15.1
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Workstation	7.0

References

http://docs.python-requests.org/en/master/community/updates/#release-and-version-historyRelease Notes, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00024.htmlMailing List, Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2035Third Party Advisory
https://bugs.debian.org/910766Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/requests/requests/commit/c45d7c49ea75133e52ab22a8e9e13173938e36ffPatch, Third Party Advisory
https://github.com/requests/requests/issues/4716Exploit, Patch, Third Party Advisory
https://github.com/requests/requests/pull/4718Patch, Third Party Advisory
https://usn.ubuntu.com/3790-1/Third Party Advisory
https://usn.ubuntu.com/3790-2/Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html
http://docs.python-requests.org/en/master/community/updates/#release-and-version-historyRelease Notes, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00024.htmlMailing List, Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2035Third Party Advisory
https://bugs.debian.org/910766Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/requests/requests/commit/c45d7c49ea75133e52ab22a8e9e13173938e36ffPatch, Third Party Advisory
https://github.com/requests/requests/issues/4716Exploit, Patch, Third Party Advisory
https://github.com/requests/requests/pull/4718Patch, Third Party Advisory
https://usn.ubuntu.com/3790-1/Third Party Advisory
https://usn.ubuntu.com/3790-2/Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html

Timeline

Published: Oct 9, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-18074?

How severe is CVE-2018-18074?

CVE-2018-18074 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 7.44% probability of exploitation in the next 30 days.

How do I fix CVE-2018-18074?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-18074?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST