CVE-2026-44375

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Source

https://cve.org/CVERecord?id=CVE-2026-44375

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44375.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-44375

Aliases

GHSA-2cwq-pwfr-wcw3

Published

2026-05-14T14:32:09Z

Modified

2026-10-28T02:31:04Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

Nerdbank.MessagePack: Attacker-controlled stackalloc in DateTime decoding causes process-terminating StackOverflowException

Details

Nerdbank.MessagePack is a NativeAOT-compatible MessagePack serialization library. Prior to 1.1.62, Nerdbank.MessagePack contains an uncontrolled stack allocation vulnerability in DateTime decoding. A malicious MessagePack payload can declare an oversized timestamp extension length, causing the reader to allocate an attacker-controlled number of bytes on the stack. This can trigger a StackOverflowException, which is not catchable by user code and terminates the process. This vulnerability is fixed in 1.1.62.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44375.json"
}

References

Affected packages

Git / github.com/aarnott/nerdbank.messagepack

Affected ranges

Type

GIT

Repo

https://github.com/aarnott/nerdbank.messagepack

Events

Introduced

Fixed

7d1eb319cfabe7280e70699946c9a48579fa2f30

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.1.62"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "7d1eb319cfabe7280e70699946c9a48579fa2f30"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v1.1.62",
            "range": [
                {
                    "fixed": "7d1eb319cfabe7280e70699946c9a48579fa2f30"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.1.62"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Affected versions

v0.*

v0.1.734-alpha

v0.10.2-rc

v0.10.25-rc

v0.10.33-rc

v0.10.42-rc

v0.10.60-rc

v0.10.63-rc

v0.10.7-rc

v0.10.87-rc

v0.10.89-rc

v0.10.95-rc

v0.11.1-rc

v0.11.34-rc

v0.11.50-rc

v0.11.53-rc

v0.11.54-rc

v0.11.6-rc

v0.11.60-rc

v0.11.8-rc

v0.12.14-rc

v0.12.2-rc

v0.12.28-rc

v0.12.39-rc

v0.12.4-rc

v0.2.108-alpha

v0.2.2-alpha

v0.2.34-alpha

v0.2.52-alpha

v0.2.82-alpha

v0.3.120-beta

v0.3.151-beta

v0.3.161-beta

v0.3.2-alpha

v0.3.27-alpha

v0.3.38-beta

v0.4.5-beta

v0.5.1-beta

v0.5.37-beta

v0.5.57-beta

v0.5.70-beta

v0.5.72-beta

v0.5.80-beta

v0.6.1-beta

v0.6.27-beta

v0.6.7-beta

v0.7.1-beta

v0.8.1-rc

v0.8.102-rc

v0.8.111-rc

v0.8.128-rc

v0.8.131-rc

v0.8.30-rc

v0.8.46-rc

v0.8.54-rc

v0.8.67-rc

v0.8.82-rc

v0.8.90-rc

v0.8.92-rc

v0.9.12-rc

v0.9.14-rc

v0.9.23-rc

v0.9.26-rc

v0.9.35-rc

v1.*

v1.0.11

v1.0.2

v1.0.40

v1.0.43

v1.1.24-beta

v1.1.25

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44375.json"