CVE-2026-23749

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Source

https://cve.org/CVERecord?id=CVE-2026-23749

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23749.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-23749

Published

2026-02-26T17:32:30Z

Modified

2026-08-12T16:24:51Z

Severity

2.1 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

Golioth Firmware SDK < 0.22.0 Blockwise Transfer Path Out-of-Bounds Read

Details

Golioth Firmware SDK version 0.19.1 prior to 0.22.0, fixed in commit 0e788217, contain an out-of-bounds read due to improper null termination of a blockwise transfer path. blockwise_transfer_init() accepts a path whose length equals CONFIG_GOLIOTH_COAP_MAX_PATH_LEN and copies it using strncpy() without guaranteeing a trailing NUL byte, leaving ctx->path unterminated. A later strlen() on this buffer (in golioth_coap_client_get_internal()) can read past the end of the allocation, resulting in a crash/denial of service. The input is application-controlled (not network by default).

Database specific

{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-170"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23749.json"
}

References

Affected packages

Git / github.com/golioth/golioth-firmware-sdk

Affected ranges

Type

GIT

Repo

https://github.com/golioth/golioth-firmware-sdk

Events

Introduced

22483586e6d5beedbd678015daa3dbbb4e5e6fb1

Fixed

0e788217ab4b61a7c1d9fadd1b4a40f5f538a26d

Fixed

f15281671a9dd5c14a5215021f4469a8e3071b37

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "0.19.1"
        },
        {
            "fixed":  "0.22.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v0.*

v0.19.1

v0.20.0

v0.21.0

v0.21.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23749.json"

vanir_signatures

[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "56502345576676756675422024377567781483",
                "205479671246672318692771008585564255481",
                "252508625059605475129627471649153268843",
                "185808600035126455037782035841831069175"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-23749-b02f7d91",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/golioth/golioth-firmware-sdk/commit/0e788217ab4b61a7c1d9fadd1b4a40f5f538a26d",
        "target":  {
            "file":  "src/coap_blockwise.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "63305777133134424483942790192886599276",
            "length":  389
        },
        "id":  "CVE-2026-23749-bd8149f7",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/golioth/golioth-firmware-sdk/commit/0e788217ab4b61a7c1d9fadd1b4a40f5f538a26d",
        "target":  {
            "file":  "src/coap_blockwise.c",
            "function":  "blockwise_transfer_init"
        }
    }
]

vanir_signatures_modified

"2026-08-12T16:24:51Z"