ALPINE-CVE-2026-82209
When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a `Set-Cookie` header where the `Domain` attribute explicitly matches an origin host that is itself a public suffix (e.g., `Domain=co.uk` set by `co.uk`). Instead of coercing it into a strict host-only cookie, libcurl saves the cookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is inappropriately included in subsequent outbound requests or HTTP redirects to arbitrary sibling subdomains under the same public suffix (e.g., `attacker.co.uk`).
ALPINE-CVE-2026-82209
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-2026-82209
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
- 8.22.0-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": "7.46.0"
},
{
"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-2026-82209.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "7.46.0"
},
{
"fixed": "8.22.0-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-2026-82209.json"
},
"ecosystem_specific": {}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55188 · Revision 1
- Added to Heist Feed
- Publisher date