CVE-2026-43859

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Source
https://cve.org/CVERecord?id=CVE-2026-43859
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43859.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-43859
Downstream
Related
Published
2026-05-04T05:41:07.610Z
Modified
2026-08-12T16:25:15.886067Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
[none]
Details

mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP auth_cram MD5 digest.

Database specific 
{
    "cna_assigner": "mitre",
    "cwe_ids": [
        "CWE-158"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43859.json"
}
References

Affected packages

Git / github.com/muttmua/mutt

Affected ranges

Type
GIT
Repo
https://github.com/muttmua/mutt
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
31864ba90b7043675e09f82f73dceaa605a71584
Fixed
834c5a2ed0479e51e8662a31caed129f136f4805
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.3.2"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

Other
mutt-0-92-10i
mutt-0-92-11i
mutt-0-92-9i
mutt-0-93-unstable
mutt-0-94-10i-rel
mutt-0-94-13-rel
mutt-0-94-14-rel
mutt-0-94-15-rel
mutt-0-94-16i-rel
mutt-0-94-17i-rel
mutt-0-94-18-rel
mutt-0-94-5i-rel
mutt-0-94-6i-rel
mutt-0-94-7i-rel
mutt-0-94-8i-rel
mutt-0-94-9i-p1
mutt-0-94-9i-rel
mutt-0-95-rel
mutt-0-96-1-rel
mutt-0-96-2-slightly-post-release
mutt-0-96-3-rel
mutt-0-96-4-rel
mutt-0-96-5-rel
mutt-0-96-6-rel
mutt-0-96-7-rel
mutt-0-96-8-rel
mutt-0-96-rel
mutt-1-1-1-1-rel
mutt-1-1-1-2-rel
mutt-1-1-1-rel
mutt-1-1-10-rel
mutt-1-1-11-rel
mutt-1-1-12-rel
mutt-1-1-13-rel
mutt-1-1-14-rel
mutt-1-1-2-rel
mutt-1-1-3-rel
mutt-1-1-4-rel
mutt-1-1-5-rel
mutt-1-1-6-rel
mutt-1-1-7-rel
mutt-1-1-8-rel
mutt-1-1-9-rel
mutt-1-1-rel
mutt-1-10-rel
mutt-1-11-rel
mutt-1-12-rel
mutt-1-13-rel
mutt-1-14-rel
mutt-1-3-1-rel
mutt-1-3-10-rel
mutt-1-3-11-rel
mutt-1-3-12-rel
mutt-1-3-13-rel
mutt-1-3-14-rel
mutt-1-3-15-rel
mutt-1-3-16-rel
mutt-1-3-17-rel
mutt-1-3-18-rel
mutt-1-3-19-rel
mutt-1-3-2-rel
mutt-1-3-20-rel
mutt-1-3-21-rel
mutt-1-3-22-1-rel
mutt-1-3-22-rel
mutt-1-3-23-1-rel
mutt-1-3-23-2-rel
mutt-1-3-23-rel
mutt-1-3-24-rel
mutt-1-3-25-rel
mutt-1-3-26-rel
mutt-1-3-27-rel
mutt-1-3-3-rel
mutt-1-3-4-rel
mutt-1-3-5-rel
mutt-1-3-6-rel
mutt-1-3-7-rel
mutt-1-3-8-rel
mutt-1-3-9-rel
mutt-1-3-rel
mutt-1-5-1-rel
mutt-1-5-15-rel
mutt-1-5-16-rel
mutt-1-5-17-rel
mutt-1-5-18-rel
mutt-1-5-19-rel
mutt-1-5-2-rel
mutt-1-5-20-rel
mutt-1-5-21-rel
mutt-1-5-22-rel
mutt-1-5-24-rel
mutt-1-5-3-rel
mutt-1-5-4-rel
mutt-1-5-5-1-rel
mutt-1-5-5-rel
mutt-1-5-6-rel
mutt-1-6-rel
mutt-1-7-rel
mutt-1-8-rel
mutt-1-9-rel
mutt-2-0-rel
mutt-2-1-rel
mutt-2-2-rel
mutt-2-3-1-rel
mutt-2-3-rel
post-type-punning-patch
pre-type-punning-patch

Database specific

vanir_signatures 
[
    {
        "signature_type": "Function",
        "target": {
            "file": "imap/auth_cram.c",
            "function": "hmac_md5"
        },
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "function_hash": "39194236517090803038525313853904571725",
            "length": 1050.0
        },
        "id": "CVE-2026-43859-528055aa",
        "source": "https://github.com/muttmua/mutt/commit/834c5a2ed0479e51e8662a31caed129f136f4805"
    },
    {
        "signature_type": "Line",
        "target": {
            "file": "imap/auth_cram.c"
        },
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "123565369536921193578487493152844034523",
                "249680598422468790362952372589335950157",
                "204047862379830072634920604303869951573",
                "72422825420115661250085769234324505137"
            ]
        },
        "id": "CVE-2026-43859-f29a1bb0",
        "source": "https://github.com/muttmua/mutt/commit/834c5a2ed0479e51e8662a31caed129f136f4805"
    }
]
vanir_signatures_modified 
"2026-08-12T16:25:15Z"
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43859.json"