CVE-2020-11021

Name: CVE-2020-11021
Creator: NVD / NIST
Published: 2020-04-29T18:15:13.423+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.74%

Last modified Jun 17, 2026

CVE-2020-11021 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Actions Http-Client (NPM @actions/http-client) before version 1.0.8 can disclose Authorization headers to incorrect domain in certain redirect scenarios. The conditions in which this happens are if consumers of the http-client: 1. EPSS estimates a 1.74% chance of exploitation in the next 30 days.

Description

Actions Http-Client (NPM @actions/http-client) before version 1.0.8 can disclose Authorization headers to incorrect domain in certain redirect scenarios. The conditions in which this happens are if consumers of the http-client: 1. make an http request with an authorization header 2. that request leads to a redirect (302) and 3. the redirect url redirects to another domain or hostname Then the authorization header will get passed to the other domain. The problem is fixed in version 1.0.8.

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

1.74%

74.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Http-Client Project	Http-Client	< 1.0.8

References

https://github.com/actions/http-client/commit/f6aae3dda4f4c9dc0b49737b36007330f78fd53aPatch, Third Party Advisory
https://github.com/actions/http-client/pull/27Patch, Third Party Advisory
https://github.com/actions/http-client/security/advisories/GHSA-9w6v-m7wp-jwg4Third Party Advisory
https://github.com/actions/http-client/commit/f6aae3dda4f4c9dc0b49737b36007330f78fd53aPatch, Third Party Advisory
https://github.com/actions/http-client/pull/27Patch, Third Party Advisory
https://github.com/actions/http-client/security/advisories/GHSA-9w6v-m7wp-jwg4Third Party Advisory

Timeline

Published: Apr 29, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11021?

How severe is CVE-2020-11021?

CVE-2020-11021 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.74% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11021?

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-2020-11021?

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

Scan your code now

Source: NVD / NIST