CVE-2026-87865

priority · track · 0EPSS 0.003 · 19 %ileDEFRUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.27% (19th) EPSS
no CVSS
Is it mine?
4 products
Check your exposure
Who says so?
3 sources
cert_bund · certfr · osv

EPSS · scored 2026-10-22

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

No CVSS score recorded.

02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-384USLLM-inferred
03

affected products (4)

Products and version ranges known to be affected.

04

advisories (3)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-3904cURL: Mehrere SchwachstellenDeutsch2026-10-13csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in cURL ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren oder einen Denial-of-Service-Zustand auszulösen.

  • CERTFR-2026-AVI-1307Multiples vulnérabilités dans CurlFrançais2026-10-14vendor · certfrFR
  • CURL-CVE-2026-87865knownhost callback mismatches key as missing2026-10-14vendor · osvUS

    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.

05

sources

Which sources assert this record, and when.

cert_bundcertfrosvNVDCVE.orgMITRE
published 2026-10-20modified 2026-10-22
06

references (3) nvd

External citations — patches, advisories, analysis.

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