ALPINE-CVE-2026-42395
A host listed as a trusted proxy can send forwarding information containing a NUL byte, which crashes the login process on the following login attempt. The login process is terminated, which can cause degradation or denial of service for logins. Deployments that do not configure trusted proxies are not affected. Restrict the list of trusted proxy networks to hosts that are fully under your control. Update to non-vulnerable version. No publicly available exploits are known.
ALPINE-CVE-2026-42395
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-2026-42395
dovecot
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2.4.5-r0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
dovecot
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2.4.5-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": "0"
},
{
"fixed": "2.4.5-r0"
}
]
}
],
"package": {
"name": "dovecot",
"purl": "pkg:apk/alpine/dovecot?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-42395.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.5-r0"
}
]
}
],
"package": {
"name": "dovecot",
"purl": "pkg:apk/alpine/dovecot?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-42395.json"
},
"ecosystem_specific": {}
}
]Publisher severity
No explicit severity was provided.
- Event
- #54379 · Revision 1
- Added to Heist Feed
- Publisher date