CVE-2026-92392 curl - Use After Free

curl contains a use after free vulnerability caused by mishandling HTTP/2 RST_STREAM frames with reason HTTP_1_1_REQUIRED or REFUSED_STREAM during upload, letting remote attackers cause memory corruption, exploit requires crafted server response.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.23% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-416

Vendor fix

Update to the latest curl version with the fix applied.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs