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CVE

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

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.

MEDIUM · CVSS 6.1 EPSS 0.00154
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules7 YARA rules0
⬡

Weakness Classification

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
▤

Affected Products & Versions

6
gnu wget<= 1.21.1
broadcom brocade fabric operating system firmwareall versions
netapp cloud backupall versions
netapp ontap select deploy administration utilityall versions
netapp a250 firmwareall versions
netapp 500f firmwareall versions
◈

Sigma Hunt Rules

7
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Download and Execute Pattern via Curl/Wget
producthighSuspicious File Download From IP Via Wget.EXE
producthighSuspicious File Download From IP Via Wget.EXE - Paths
producthighSuspicious File Download From File Sharing Domain Via Wget.EXE
productmediumDownload File To Potentially Suspicious Directory Via Wget
productmediumData Exfiltration with Wget
▣

Scoring & Timeline

6.1
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Apr 2021 · 05:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
⚑

Vendor Advisories

4
suse-csafSUSE-SU-2025:0425-1
suse-csafSUSE-SU-2025:0380-1
suse-csafSUSE-SU-2025:0366-1
msrcCVE-2021-31879
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://mail.gnu.org/archive/html/bug-wget/2021-02/msg00002.htmlMailing ListVendor Advisory
https://security.netapp.com/advisory/ntap-20210618-0002/Third Party Advisory
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