All vulnerabilities
CVE-2026-86412

curl: server-set cookie erases cookie jar

curl curlLibraries & packages
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.29%Chance of exploitation activity in the next 30 days, higher than 20% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Published20 Oct 2026Updated 20 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version.

Description

A remote HTTP server can set a cookie that curl accepts and writes to a Netscape cookie jar but cannot reload. On the next invocation using the same path for --cookie and --cookie-jar, curl fails before connecting, then the cleanup procedure replaces the jar with an empty file, deleting cookies for unrelated domains.

Text from CVE List

Affected versions 5

  • 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

References 3