CVE-2026-87865

CVE-2026-87865

published October 21, 2026

CVSS
—
EPSS
0%
Percentile
18.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00275 · 18.9th percentile
Published
2026-10-21T01:17Z
References (3)
https://curl.se/docs/CVE-2026-87865.html · 2499f714-1537-4658-8207-48ae4bb9eae9https://curl.se/docs/CVE-2026-87865.json · 2499f714-1537-4658-8207-48ae4bb9eae9https://hackerone.com/reports/3975408 · 2499f714-1537-4658-8207-48ae4bb9eae9
EPSS history
Timeline
  • 22 OCT 03:36Z
    EPSS moved — → 0%
    epss
  • 20 OCT 20:15Z
    knownhost callback mismatches key as missing
    cvelistv5
  • 20 OCT 20:15Z
    knownhost callback mismatches key as missing
    cvelistv5