CVE-2026-18924
Publication date 6 September 2026
Last updated 25 September 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| curl | 26.04 LTS resolute |
Fixed 8.18.0-1ubuntu2.7
|
| 24.04 LTS noble |
Fixed 8.5.0-2ubuntu10.15
|
|
| 22.04 LTS jammy |
Fixed 7.81.0-1ubuntu1.29
|
|
| 20.04 LTS focal |
Fixed 7.68.0-1ubuntu2.25+esm9
|
|
| 18.04 LTS bionic |
Fixed 7.58.0-2ubuntu3.24+esm14
|
|
| 16.04 LTS xenial |
Fixed 7.47.0-1ubuntu2.19+esm20
|
|
| 14.04 LTS trusty |
Not affected
|
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CVSS version: CVSS v3.0
Base score
9.1 · Critical
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8820-1
- curl vulnerabilities
- 24 September 2026