All vulnerabilities
CVE-2026-92392

curl: HTTP/2 upload Use-After-Free

curl curlLibraries & packages
Open in ThreatlineRecord JSON
CVSS
8.1High
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 15 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.85%Chance of exploitation activity in the next 30 days, higher than 57% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Published14 Oct 2026Updated 20 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version.

Description

During an upload, curl mishandles HTTP/2 RST_STREAM received from the server (with reason HTTP_1_1_REQUIRED or REFUSED_STREAM) leading to a use after free of a struct Curl_easy object.

Text from CVE List

Affected versions 13

  • curlaffected: 8.22.0 through 8.22.0CVE List
  • curlaffected: 8.21.0 through 8.21.0CVE List
  • curlaffected: 8.20.0 through 8.20.0CVE List
  • curlaffected: 8.19.0 through 8.19.0CVE List
  • curlaffected: 8.18.0 through 8.18.0CVE List
  • curlaffected: 8.17.0 through 8.17.0CVE List
  • curlaffected: 8.16.0 through 8.16.0CVE List
  • curlaffected: 8.15.0 through 8.15.0CVE List
  • curlaffected: 8.14.1 through 8.14.1CVE List
  • curlaffected: 8.14.0 through 8.14.0CVE List
  • curlaffected: 8.13.0 through 8.13.0CVE List
  • curlaffected: 8.12.1 through 8.12.1CVE List
  • curlaffected: 8.12.0 through 8.12.0CVE List

References 3