CVE-2026-9079

libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://curl.se/docs/CVE-2026-9079.html	Patch Vendor Advisory
https://curl.se/docs/CVE-2026-9079.json	Vendor Advisory
https://hackerone.com/reports/3750295	Exploit Issue Tracking Third Party Advisory
https://hackerone.com/reports/3750295	Exploit Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-07-03 07:16

Updated : 2026-09-15 07:16

NVD link : CVE-2026-9079

Mitre link : CVE-2026-9079

CVE.ORG link : CVE-2026-9079

JSON object : View

Products Affected

haxx

curl

CWE

CWE-522

Insufficiently Protected Credentials

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