Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-86802.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-86802
Upstream
Published
2026-05-12T14:17:01Z
Modified
2026-09-01T05:26:35Z
Summary
CVE-2026-33603 affecting package dovecot 2.3.20-1
Details

Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires that the attacker is able to position itself between Dovecot and the client connection. If successful, the attacker can eavesdrop communications between Dovecot and client as MITM proxy. Install fixed version. No publicly available exploits are known.

References

Affected packages

Azure Linux:3 / dovecot

Package

Name
dovecot
Purl
pkg:rpm/azure-linux/dovecot

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Last affected
2.3.20-1

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-86802.json"