Bug 2464861 (CVE-2026-43862)

Summary: CVE-2026-43862 mutt: Mutt: Security bypass due to mishandled IMAP authentication
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in mutt, an email client. The `imap_auth_gss` security level, which is used for secure IMAP (Internet Message Access Protocol) authentication, is mishandled. This vulnerability could allow an attacker to bypass certain security protections, potentially leading to a low impact on data integrity.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-05-04 07:01:40 UTC
In mutt before 2.3.2, the imap_auth_gss security level is mishandled.