CVE-2026-8926

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://curl.se/docs/CVE-2026-8926.html	Patch Vendor Advisory
https://curl.se/docs/CVE-2026-8926.json	Vendor Advisory
https://hackerone.com/reports/3735184	Exploit Issue Tracking Third Party Advisory
https://hackerone.com/reports/3735184	Exploit Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

History

07 Jul 2026, 23:02

Type	Values Removed	Values Added
CWE		CWE-522
CPE		cpe:2.3:a:haxx:curl::::::::
First Time		Haxx curl Haxx
References	~~() https://curl.se/docs/CVE-2026-8926.html -~~	() https://curl.se/docs/CVE-2026-8926.html - Patch, Vendor Advisory
References	~~() https://curl.se/docs/CVE-2026-8926.json -~~	() https://curl.se/docs/CVE-2026-8926.json - Vendor Advisory
References	~~() https://hackerone.com/reports/3735184 -~~	() https://hackerone.com/reports/3735184 - Exploit, Issue Tracking, Third Party Advisory

06 Jul 2026, 18:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1
References	~~() https://hackerone.com/reports/3735184 -~~	() https://hackerone.com/reports/3735184 -

03 Jul 2026, 07:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-03 07:16

Updated : 2026-07-07 23:02

NVD link : CVE-2026-8926

Mitre link : CVE-2026-8926

CVE.ORG link : CVE-2026-8926

JSON object : View

Products Affected

haxx

curl

CWE

CWE-522

Insufficiently Protected Credentials

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