VDB
CVE-2026-87865
CVE-2026-87865
PUBLISHED
CVSS 7.4 HIGH
Reported by curl · Published October 20, 2026
When libcurl uses libssh2 with a hashed `known_hosts` file, an unrelated initial entry can cause host key validation to report a key *mismatch* as a *missing* key to the `CURLOPT_SSH_KEYFUNCTION` callback.
Risk Scores
CVSS 3.1
7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| curl | curl | 8.22.0, 8.21.0, 8.20.0 |
| curl | curl | 7.69.1, 8.22.0, 8.21.0 |
| alpine | curl | 0 |
Timeline
- CVE Published
- Oct 14, 2026 PoC Published
- Oct 21, 2026 EPSS Score
- Oct 24, 2026 EPSS Score
- Oct 25, 2026 EPSS Score
- Oct 26, 2026 PoC Published
- Oct 27, 2026 EPSS Score
- Oct 29, 2026 EPSS Score
- Oct 31, 2026 EPSS Score