CVE-2026-103531

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Source

https://cve.org/CVERecord?id=CVE-2026-103531

Import Source

https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-103531.json

JSON Data

https://api.test.osv.dev/v1/vulns/CVE-2026-103531

Downstream

Published

2026-10-01T00:45:15Z

Modified

2026-10-01T14:08:00Z

Severity

5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X CVSS Calculator

Summary

OpenSC card-setcos.c setcos_construct_fci_44 stack-based overflow

Details

A flaw has been found in OpenSC up to 0.27.1. The impacted element is the function setcos_construct_fci_44 of the file src/libopensc/card-setcos.c. Executing a manipulation of the argument type_attr can lead to stack-based buffer overflow. The attack can be launched remotely. This patch is called ad730304052937c32b4eb489a06835ac6123632c. It is best practice to apply a patch to resolve this issue.

Database specific

{
    "cna_assigner": "VulDB",
    "cwe_ids": [
        "CWE-119",
        "CWE-121"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103531.json"
}

References

Affected packages

Git / github.com/opensc/opensc

Affected ranges

Type

GIT

Repo

https://github.com/opensc/opensc

Events

Introduced

aca07679a6dd281ee6411f5e7de2ed0ee796bee8

Fixed

ad730304052937c32b4eb489a06835ac6123632c

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0.27.0"
        },
        {
            "last_affected": "0.27.0"
        },
        {
            "introduced": "0.27.1"
        },
        {
            "last_affected": "0.27.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

0.*

0.27.0

0.27.1

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-103531.json"

vanir_signatures

[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "188444882791401343814308368087227449773",
                "255287473414578895801233644686997904169",
                "199720571051964386185314939703604722375",
                "262364367775997473953856059706205532802",
                "167309018626210559516864418781908588900",
                "56660642277665989202368885092511930793",
                "206291762425855415636357188335520884140",
                "168146349159072093215139798962742728625",
                "265098098848641978286030226391255275832",
                "309382543158221163977322538698882509383"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-103531-6d03cb2f",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/opensc/opensc/commit/ad730304052937c32b4eb489a06835ac6123632c",
        "target": {
            "file": "src/libopensc/card-setcos.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "294147007155743954127474483399428493291",
            "length": 2856
        },
        "id": "CVE-2026-103531-9217ea0f",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/opensc/opensc/commit/ad730304052937c32b4eb489a06835ac6123632c",
        "target": {
            "file": "src/libopensc/card-setcos.c",
            "function": "setcos_construct_fci_44"
        }
    }
]

vanir_signatures_modified

"2026-10-01T14:08:00Z"