CVE-2026-18924

Published: Sep 6, 2026Modified: Sep 8, 2026

9.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Exploitability: 3.9 / Impact: 5.2

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

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.

Related CWEs

CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (4)

https://curl.se/docs/CVE-2026-18924.html

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

https://curl.se/docs/CVE-2026-18924.json

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

https://hackerone.com/reports/3916059

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

https://hackerone.com/reports/3916059

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.