ALPINE-CVE-2026-9547
When a libcurl-based application performs transfers via `SCP://` or `SFTP://` and utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for that host in the `known_hosts` file. Instead of rejecting the mismatch, the callback mechanism fails to properly enforce the restriction, allowing the connection to succeed without warning and risking a potential man-in-the-middle attack.
ALPINE-CVE-2026-9547
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:ALPINE-CVE-2026-9547
curl
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 8.22.0-r0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
curl
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 8.21.0-r0
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "7.69.0"
},
{
"fixed": "8.22.0-r0"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:apk/alpine/curl?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-9547.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "7.69.0"
},
{
"fixed": "8.21.0-r0"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:apk/alpine/curl?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-9547.json"
},
"ecosystem_specific": {}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55203 · Revision 1
- Added to Heist Feed
- Publisher date