What is GHSA-xcm8-9xjx-f5jq?

GHSA-xcm8-9xjx-f5jq is a security advisory published by GitHub Security Advisories with Critical severity. A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to...

Which CVE IDs does GHSA-xcm8-9xjx-f5jq cover?

GHSA-xcm8-9xjx-f5jq covers the following CVE IDs: CVE-2026-18924. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-xcm8-9xjx-f5jq?

GHSA-xcm8-9xjx-f5jq has a CVSS v3 base score of 9.1, published by GitHub Security Advisories.

GHSA-xcm8-9xjx-f5jqCriticalCVSS 9.1

A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to...

Vendor

GitHub Security Advisories

Published

September 6, 2026

Last Modified

September 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-18924 →

📋 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.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-18924
https://hackerone.com/reports/3916059
https://curl.se/docs/CVE-2026-18924.html
https://curl.se/docs/CVE-2026-18924.json
https://github.com/advisories/GHSA-xcm8-9xjx-f5jq