ALPINE-CVE-2026-27856

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Source
https://security.alpinelinux.org/vuln/CVE-2026-27856
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-27856.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-27856
Upstream
  • CVE-2026-27856
Published
2026-03-27T09:16:19.767Z
Modified
2026-06-09T21:31:28.375667775Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known.

References

Affected packages

Alpine:v3.23 / dovecot

Package

Name
dovecot
Purl
pkg:apk/alpine/dovecot?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-27856.json"

Alpine:v3.24 / dovecot

Package

Name
dovecot
Purl
pkg:apk/alpine/dovecot?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-27856.json"