CVE-2026-9080

Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://curl.se/docs/CVE-2026-9080.html	Patch Vendor Advisory
https://curl.se/docs/CVE-2026-9080.json	Vendor Advisory
https://hackerone.com/reports/3749204	Exploit Issue Tracking Third Party Advisory
https://hackerone.com/reports/3749204	Exploit Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

07 Jul 2026, 15:05

Type	Values Removed	Values Added
References	~~() https://curl.se/docs/CVE-2026-9080.html -~~	() https://curl.se/docs/CVE-2026-9080.html - Patch, Vendor Advisory
References	~~() https://curl.se/docs/CVE-2026-9080.json -~~	() https://curl.se/docs/CVE-2026-9080.json - Vendor Advisory
References	~~() https://hackerone.com/reports/3749204 -~~	() https://hackerone.com/reports/3749204 - Exploit, Issue Tracking, Third Party Advisory
CWE		CWE-416
First Time		Haxx curl Haxx
CPE		cpe:2.3:a:haxx:curl::::::::

06 Jul 2026, 18:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.3
References	~~() https://hackerone.com/reports/3749204 -~~	() https://hackerone.com/reports/3749204 -

03 Jul 2026, 07:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-03 07:16

Updated : 2026-07-07 15:05

NVD link : CVE-2026-9080

Mitre link : CVE-2026-9080

CVE.ORG link : CVE-2026-9080

JSON object : View

Products Affected

haxx

curl

CWE

CWE-416

Use After Free

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