Vulnerability DatabaseCVE-2026-8926
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CVE-2026-8926
Published:July 03, 2026
Updated:July 21, 2026
When asking curl to use a ".netrc" file to find credentials and at the same time specifying a URL with a username(without a password), like "https://user@example.com/", curl could wrongly get and use the password for another user set in the ".netrc" file for that host if such a one exists and there is no match for the specified user.
Affected Packages
https://github.com/curl/curl.git (GITHUB):
Affected version(s) >=curl-8_11_1 <curl-8_21_0
Fix Suggestion:
Update to version curl-8_21_0
Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (3)
https://curl.se/docs/CVE-2026-8926.html
https://hackerone.com/reports/3735184
https://curl.se/docs/CVE-2026-8926.json
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Insufficiently Protected Credentials
CWE-522
EPSS
Base Score:
0.61