CVE-2021-31879

Name: CVE-2021-31879
Creator: NVD / NIST
Published: 2021-04-29T05:15:08.707+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.10%

Last modified Jun 17, 2026

CVE-2021-31879 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. GNU Wget through 1.21.1 does not omit the Authorization header upon a redirect to a different origin, a related issue to CVE-2018-1000007.. EPSS estimates a 1.10% chance of exploitation in the next 30 days.

Description

GNU Wget through 1.21.1 does not omit the Authorization header upon a redirect to a different origin, a related issue to CVE-2018-1000007.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

1.10%

61.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-601

Affected Software

Vendor	Product	Versions
Gnu	Wget	<= 1.21.1
Broadcom	Brocade Fabric Operating System Firmware	All versions
Netapp	Cloud Backup	All versions
Netapp	Ontap Select Deploy Administration Utility	All versions
Netapp	A250 Firmware	All versions
Netapp	500f Firmware	All versions

References

https://mail.gnu.org/archive/html/bug-wget/2021-02/msg00002.htmlMailing List, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210618-0002/Third Party Advisory
https://mail.gnu.org/archive/html/bug-wget/2021-02/msg00002.htmlMailing List, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210618-0002/Third Party Advisory

Timeline

Published: Apr 29, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31879?

GNU Wget through 1.21.1 does not omit the Authorization header upon a redirect to a different origin, a related issue to CVE-2018-1000007.

How severe is CVE-2021-31879?

CVE-2021-31879 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31879?

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-2021-31879?

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

Scan your code now

Source: NVD / NIST