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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-18924

HTTP/2 server push UAF

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

curl curl

Default version status: unaffected

  • 7.44.0 to < 8.14.2affected
  • 8.15.0 to < 8.16.1affected
  • 8.17.0 to < 8.20.1affected
  • 8.21.0 to < 8.22.0affected

curl curl

Default version status: unaffected

  • ea7134ac874a66107e54ff93657ac565cf2ec4aa to < 90325ff0444cbdff368bda5d26d6405a0bb6ee43affected

curl curl

Default version status: unaffected

  • 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
  • 8.2.1affected
  • 8.2.0affected
  • 8.1.2affected
  • 8.1.1affected
  • 8.1.0affected
  • 8.0.1affected
  • 8.0.0affected
  • 7.88.1affected
  • 7.88.0affected
  • 7.87.0affected
  • 7.86.0affected
  • 7.85.0affected
  • 7.84.0affected
  • 7.83.1affected
  • 7.83.0affected
  • 7.82.0affected
  • 7.81.0affected
  • 7.80.0affected
  • 7.79.1affected
  • 7.79.0affected
  • 7.78.0affected
  • 7.77.0affected
  • 7.76.1affected
  • 7.76.0affected
  • 7.75.0affected
  • 7.74.0affected
  • 7.73.0affected
  • 7.72.0affected
  • 7.71.1affected
  • 7.71.0affected
  • 7.70.0affected
  • 7.69.1affected
  • 7.69.0affected
  • 7.68.0affected
  • 7.67.0affected
  • 7.66.0affected
  • 7.65.3affected
  • 7.65.2affected
  • 7.65.1affected
  • 7.65.0affected
  • 7.64.1affected
  • 7.64.0affected
  • 7.63.0affected
  • 7.62.0affected
  • 7.61.1affected
  • 7.61.0affected
  • 7.60.0affected
  • 7.59.0affected
  • 7.58.0affected
  • 7.57.0affected
  • 7.56.1affected
  • 7.56.0affected
  • 7.55.1affected
  • 7.55.0affected
  • 7.54.1affected
  • 7.54.0affected
  • 7.53.1affected
  • 7.53.0affected
  • 7.52.1affected
  • 7.52.0affected
  • 7.51.0affected
  • 7.50.3affected
  • 7.50.2affected
  • 7.50.1affected
  • 7.50.0affected
  • 7.49.1affected
  • 7.49.0affected
  • 7.48.0affected
  • 7.47.1affected
  • 7.47.0affected
  • 7.46.0affected
  • 7.45.0affected
  • 7.44.0affected

References