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CVE-2021-31879

22
FAUCET Score

CVE-2021-31879 describes a vulnerability in GNU Wget versions through 1.21.1, where the Authorization header is not properly removed during a redirect to a different origin, affecting products from Broadcom, GNU, and NetApp. This issue, similar to CVE-2018-1000007, carries a CVSS score of 6.1 (Medium) and involves a network-based attack with low complexity, requiring user interaction, potentially leading to low confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.21.1CPE matchmatch criteria
cpe:2.3:a:gnu:wget:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.10%
Probability of exploitation in next 30 days
EPSS Percentile
62.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0110 is in the 75th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 1.21.2-1
microsoftpatch availablevia msrc
Product: 19058-16823Fixed in: 1.21.2-1
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 1.21.2-1
microsoftpatch availablevia msrc
Product: 19057-16820Fixed in: 1.21.2-1
microsoftpatch availablevia msrc
Product: cm1 wget 1.21.2-1 on CBL Mariner 1.0Fixed in: 1.21.2-1
microsoftpatch availablevia msrc
Product: cbl2 wget 1.21.2-1 on CBL Mariner 2.0Fixed in: 1.21.2-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 1.21.2-1
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 1.21.2-1
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: wget
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: wget

Vendor Advisories (3)

microsoft2021-May/CVE-2021-31879

CVE-2021-31879

May 11, 2021
microsoft2021-Apr/CVE-2021-31879Moderate

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.

Apr 13, 2021
redhatCVE-2021-31879Moderate

wget: authorization header disclosure on redirect

Oct 4, 2019

References

mail.gnu.org / archive/html/bug-wget/2021-02/msg00002.html
Mailing ListVendor Advisory
security.netapp.com / advisory/ntap-20210618-0002
Third Party Advisory