CVE-2026-18924
HTTP/2 server push UAF
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-416 |
| Vendor | curl |
| Product | curl |
| Published | Sep 6, 2026 |
| Last Updated | Sep 15, 2026 |
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Affected Versions
curl / curl
7.44.0 < 8.14.2 8.15.0 < 8.16.1 8.17.0 < 8.20.1 8.21.0 < 8.22.0
curl / curl
ea7134ac874a66107e54ff93657ac565cf2ec4aa < 90325ff0444cbdff368bda5d26d6405a0bb6ee43
curl / curl
8.21.0 8.20.0 8.19.0 8.18.0 8.17.0 8.16.0 8.15.0 8.14.1 8.14.0 8.13.0 8.12.1 8.12.0 8.11.1 8.11.0 8.10.1 8.10.0 8.9.1 8.9.0 8.8.0 8.7.1 8.7.0 8.6.0 8.5.0 8.4.0 8.3.0 8.2.1 8.2.0 8.1.2 8.1.1 8.1.0 8.0.1 8.0.0 7.88.1 7.88.0 7.87.0 7.86.0 7.85.0 7.84.0 7.83.1 7.83.0 7.82.0 7.81.0 7.80.0 7.79.1 7.79.0 7.78.0 7.77.0 7.76.1 7.76.0 7.75.0 7.74.0 7.73.0 7.72.0 7.71.1 7.71.0 7.70.0 7.69.1 7.69.0 7.68.0 7.67.0 7.66.0 7.65.3 7.65.2 7.65.1 7.65.0 7.64.1 7.64.0 7.63.0 7.62.0 7.61.1 7.61.0 7.60.0 7.59.0 7.58.0 7.57.0 7.56.1 7.56.0 7.55.1 7.55.0 7.54.1 7.54.0 7.53.1 7.53.0 7.52.1 7.52.0 7.51.0 7.50.3 7.50.2 7.50.1 7.50.0 7.49.1 7.49.0 7.48.0 7.47.1 7.47.0 7.46.0 7.45.0 7.44.0
References
Credits
Stephan Zeisberg (Security Research Labs) Daniel Stenberg