CVE-2025-10966

curl's code for managing SSH connections when SFTP was done using the wolfSSH
powered backend was flawed and missed host verification mechanisms.

This prevents curl from detecting MITM attackers and more.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
curlCNA
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CVEADP
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CISA-ADPADP
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 3%
Debian logo
Debian Releases
Debian Product
Codename
curl
bullseye
unimportant
bullseye (security)
unimportant
bookworm
unimportant
bookworm (security)
unimportant
trixie
unimportant
forky
8.17.0-3
fixed
sid
8.17.0-3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
curl
questing
not-affected
plucky
not-affected
noble
not-affected
jammy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected
References
https://curl.se/docs/CVE-2025-10966.html
https://curl.se/docs/CVE-2025-10966.json
https://hackerone.com/reports/3355218
http://www.openwall.com/lists/oss-security/2025/11/05/2