libcurl 7.71.0 < 8.20.0 Cookie Leak via Stale Host Header

high Nessus Plugin ID 311420

Version 1.4

May 15, 2026, 12:01 PM

  • CVSS metrics ("CVSSv2 score" set to 7.8)
  • CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C")
  • 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")
  • CVSSv2 severity (based on CVE-2026-6276, severity increased from "Medium" to "High")
  • Exploit attributes ("Exploit available" set to "True")
  • Exploit attributes ("Exploitability ease" changed from "No known exploits are available" to "Exploits are available")

Plugin Feed: 202605151201

Version 1.2

May 4, 2026, 9:33 AM

  • CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:U/RL:OF/RC:C")
  • CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:U/RL:O/RC:C")
  • Exploit attributes ("Exploit available" set to "False")
  • Exploit attributes ("Exploitability ease" set to "No known exploits are available")

Plugin Feed: 202605040933

Version 1.1

May 1, 2026, 6:47 PM

  • New

Plugin Feed: 202605011847

* Changelogs are generally available for changes made after Nov 1, 2022