Bug 2464868 (CVE-2026-43861)

Summary: CVE-2026-43861 mutt: Mutt: URL processing vulnerability due to improper null character handling
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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 `url_pct_decode` function, which is responsible for decoding URL-encoded strings, does not correctly handle null termination characters. This vulnerability could allow a remote attacker, to manipulate how URLs are processed, potentially leading to a limited loss of 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 07:02:06 UTC
mutt before 2.3.2 does not check for '\0' in url_pct_decode.