CVE-2026-42444

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Source

https://cve.org/CVERecord?id=CVE-2026-42444

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42444.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-42444

Aliases

GHSA-7hqh-mq57-wjmq

Published

2026-05-12T19:22:09.813Z

Modified

2026-07-08T08:13:19.737486367Z

Severity

3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator

Summary

NanaZip: Unbounded resource consumption in NanaZip littlefs parser via attacker-controlled BlockCount

Details

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a denial-of-service vulnerability exists in the littlefs filesystem image parser in NanaZip. The handler's Open method reads BlockCount directly from the attacker-controlled superblock without any validation against the actual file size or any upper-bound ceiling, then iterates BlockCount times, allocating a file-path entry per iteration. A crafted 44-byte littlefs image with BlockCount = 0xFFFFFFFF causes ~4 billion heap allocations, exhausting available memory. This vulnerability is fixed in 6.0.1698.0.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42444.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-770"
    ]
}

References

Affected packages

Git / github.com/m2team/nanazip

Affected ranges

Type

GIT

Repo

https://github.com/m2team/nanazip

Events

Introduced

e4e8fbbc79db1280d94762c37e9037da169d76de

Fixed

28b2bc47eaa37f56c670c72401d97fb1178e87b8

Database specific

{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:m2team:nanazip:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "5.0.1250.0"
        },
        {
            "fixed": "6.0.1698.0"
        },
        {
            "introduced": "5.0.1252.0"
        }
    ]
}

Affected versions

5.*

5.0.1250.0

5.0.1252.0

5.0.1263.0

5.1.1252.0

5.1.1263.0

6.*

6.0.1461.0

6.0.1621.0

6.0.1630.0

6.0.1632.0

6.0.1638.0

6.0.1650.0

6.0.1691.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42444.json"