VDB
CVE-2026-86412
CVE-2026-86412
PUBLISHED
CVSS 8.1 HIGH
server-set cookie erases cookie jar
Reported by curl · Published October 20, 2026
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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| curl | Alpine | 8.23.0-r0 |
| curl | curl | 8.22.0, 8.21.0, 8.20.0, 8.19.0, 8.18.0 |
Risk scores
CVSS 3.1
8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| curl | curl | 8.22.0, 8.21.0, 8.20.0 |
| curl | curl | 8.22.0, 8.21.0, 8.20.0 |
| alpine | curl | 0 |
Timeline
- Oct 14, 2026 PoC Published
- Oct 20, 2026 CVE Published
- Oct 21, 2026 EPSS Score (6 in total, the first dated here)
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-86412
vulnetix vdb fixes CVE-2026-86412Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-86412/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart