ALPINE-CVE-2026-40686

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Source
https://security.alpinelinux.org/vuln/CVE-2026-40686
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40686.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-40686
Upstream
  • CVE-2026-40686
Published
2026-04-30T22:16:25Z
Modified
2026-11-03T06:32:55Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing characters are present (malformed UTF-8 header data). Information might be divulged within an error message produced during handling of an unrelated e-mail message.

References

Affected packages

Alpine:v3.23 / exim

Package

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

Affected ranges

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

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40686.json"

Alpine:v3.24 / exim

Package

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

Affected ranges

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

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40686.json"