CVE-2026-18924

A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to share connections with other handles, can lead to use-after-free in the cleanup process.

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 NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://curl.se/docs/CVE-2026-18924.html	Patch Vendor Advisory
https://curl.se/docs/CVE-2026-18924.json	Vendor Advisory
https://hackerone.com/reports/3916059	Exploit Mitigation Third Party Advisory
https://hackerone.com/reports/3916059	Exploit Mitigation Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-09-06 18:17

Updated : 2026-09-15 07:16

NVD link : CVE-2026-18924

Mitre link : CVE-2026-18924

CVE.ORG link : CVE-2026-18924

JSON object : View

Products Affected

haxx

curl

CWE

CWE-416

Use After Free

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