CVE-2026-43864

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Source
https://cve.org/CVERecord?id=CVE-2026-43864
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43864.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-43864
Downstream
Related
Published
2026-05-04T06:10:52.725Z
Modified
2026-08-12T16:24:25.117301Z
Severity
  • 2.5 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
Details

mutt before 2.3.2 has a showsigsummary NULL pointer dereference.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43864.json",
    "cwe_ids": [
        "CWE-476"
    ],
    "cna_assigner": "mitre"
}
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
ebfa2969042d89303d15334193fcc32866c8a8df
Database specific
Show details 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.3.2"
        }
    ]
}

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 
[
    {
        "id": "CVE-2026-43864-3fa69c7a",
        "target": {
            "file": "crypt-gpgme.c"
        },
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "12833119120848642282411084003173288835",
                "63240069752075478477784718274921719851",
                "53981827390291500523536780287408641632",
                "282413465446844343412125192118042983932"
            ]
        },
        "signature_version": "v1",
        "source": "https://github.com/muttmua/mutt/commit/ebfa2969042d89303d15334193fcc32866c8a8df",
        "signature_type": "Line"
    },
    {
        "id": "CVE-2026-43864-c8d4e853",
        "target": {
            "function": "show_sig_summary",
            "file": "crypt-gpgme.c"
        },
        "deprecated": false,
        "digest": {
            "function_hash": "93079811965556788721203308490634465968",
            "length": 2750.0
        },
        "signature_version": "v1",
        "source": "https://github.com/muttmua/mutt/commit/ebfa2969042d89303d15334193fcc32866c8a8df",
        "signature_type": "Function"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43864.json"
vanir_signatures_modified 
"2026-08-12T16:24:25Z"