Riskcovery

CVE-2026-18924

HTTP/2 server push UAF

State
Published
Severity
9.1 Critical
Published
Sep 6, 2026
Updated
Sep 15, 2026
Reserved
Aug 5, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.19.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HCISA-ADP

Weaknesses

Affected Products

ProductVersions
curlcurl
  • 7.44.0 to before 8.14.2Affected
  • 8.15.0 to before 8.16.1Affected
  • 8.17.0 to before 8.20.1Affected
  • 8.21.0 to before 8.22.0Affected
curlcurl
  • ea7134ac874a66107e54ff93657ac565cf2ec4aa to before 90325ff0444cbdff368bda5d26d6405a0bb6ee43Affected
curlcurl
  • 8.21.0Affected
  • 8.20.0Affected
  • 8.19.0Affected
  • 8.18.0Affected
  • 8.17.0Affected
  • 8.16.0Affected
  • 8.15.0Affected
  • 8.14.1Affected
  • 8.14.0Affected
  • 8.13.0Affected
  • 8.12.1Affected
  • 8.12.0Affected
  • 8.11.1Affected
  • 8.11.0Affected
  • 8.10.1Affected
  • 8.10.0Affected
  • 8.9.1Affected
  • 8.9.0Affected
  • 8.8.0Affected
  • 8.7.1Affected
  • 8.7.0Affected
  • 8.6.0Affected
  • 8.5.0Affected
  • 8.4.0Affected
  • 8.3.0Affected
  • and 73 more versions

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.