CVE-2026-92386

server-set cookie aborts cookie jar load

Published Oct 20, 2026 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Description
When writing a long cookie name and value to a Netscape cookie jar, a remote
HTTP server can make `curl` write a record that exceeds its line-length
parsing limit. Consequently, any subsequent `curl` invocation reading from
that same cookie jar using `--cookie` silently aborts parsing prematurely upon
encountering the too long line, ignoring all subsequent valid cookies in the
file.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Ubuntu USN Ubuntu USN USN-8927-1 curl vulnerabilities
Ubuntu USN Ubuntu USN USN-8927-2 curl vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}

cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Description A flaw was found in curl. A remote malicious server can trigger a denial of service (DoS) in cookie handling by providing an overly long cookie name and value that exceeds curl's line-length limit when saved to a cookie file. Subsequent curl operations reading from this cookie file silently abort parsing upon encountering the oversized entry, causing all remaining valid cookies in the file to be ignored. When writing a long cookie name and value to a Netscape cookie jar, a remote HTTP server can make `curl` write a record that exceeds its line-length parsing limit. Consequently, any subsequent `curl` invocation reading from that same cookie jar using `--cookie` silently aborts parsing prematurely upon encountering the too long line, ignoring all subsequent valid cookies in the file.
Title curl: curl: server-set cookie aborts cookie jar load server-set cookie aborts cookie jar load
References
Type Values Removed Values Added
First Time appeared Curl
Curl curl
Vendors & Products Curl
Curl curl
Type Values Removed Values Added
Description A flaw was found in curl. A remote malicious server can trigger a denial of service (DoS) in cookie handling by providing an overly long cookie name and value that exceeds curl's line-length limit when saved to a cookie file. Subsequent curl operations reading from this cookie file silently abort parsing upon encountering the oversized entry, causing all remaining valid cookies in the file to be ignored.
Title curl: curl: server-set cookie aborts cookie jar load
Weaknesses CWE-1284
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}

threat_severity

Low

Weaknesses

Sources

Status
PUBLISHED
Assigner
curl
Published
Updated
Oct 29, 2026, 7:00 PM
Reserved
Sep 16, 2026, 8:12 AM
Status
Awaiting Analysis
Published
Oct 20, 2026, 9:17 PM
Modified
Oct 29, 2026, 7:17 PM
Severity
Low
Public date
Oct 14, 2026, 12:00 PM