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.
CVE-2020-11021
This medium-severity CVE scores 6.3 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 37% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.3
- EG Score
- 6.3(medium)
- EPSS
- 75.0%
- KEV
- Not listed
Published
April 29, 2020
Last Modified
November 21, 2024
References (6)
- security-advisories@githubhttps://github.com/actions/http-client/commit/f6aae3dda4f4c9dc0b49737b36007330f78fd53a
- security-advisories@githubhttps://github.com/actions/http-client/pull/27
- security-advisories@githubhttps://github.com/actions/http-client/security/advisories/GHSA-9w6v-m7wp-jwg4
- af854a3a-2127-422b-91ae-364da2661108https://github.com/actions/http-client/commit/f6aae3dda4f4c9dc0b49737b36007330f78fd53a
- af854a3a-2127-422b-91ae-364da2661108https://github.com/actions/http-client/pull/27
- af854a3a-2127-422b-91ae-364da2661108https://github.com/actions/http-client/security/advisories/GHSA-9w6v-m7wp-jwg4
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| @actions/http-client | — | 1.0.8 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 05:44 UTCEPSS rescore
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- 2026-05-27 04:04 UTCEG score recompute
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- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-24 05:27 UTCOSV refresh
Related CVEs(same CWE)
Same CWE
10 shownCWE-200
Frequently asked(5)
What is CVE-2020-11021?
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Dependency Blast Radius
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