libcurl 8.11.0 < 8.21.0 HTTP/3 Early Data Information Disclosure (CVE-2026-9545)

Version 1.2

Jul 13, 2026, 1:10 PM

CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:POC/RL:OF/RC:C")
CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:P/RL:O/RC:C")
Exploit attributes ("Exploit available" set to "True")
Exploit attributes ("Exploitability ease" set to "Exploits are available")