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CVE-2026-18924

critical CVSS 9.1 EPSS 0.6%

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.

Versions it affects

Software versions checked with the free lookup that CVE-2026-18924 applies to, and the release that fixes it where the sources name one.

curl 8.1.2 fixed in 8.14.2

At a glance

Severity
Critical
CVSS base score
9.1 out of 10
Known exploited
Not in CISA's catalogue of exploited vulnerabilities
EPSS
0.6% probability of exploitation in the next 30 days, higher than 46% of scored vulnerabilities
Weakness
CWE-416
Published
2026-09-06
NVD CVE.org

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