CVE-2026-86716

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Source

https://cve.org/CVERecord?id=CVE-2026-86716

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86716.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-86716

Published

2026-09-08T18:45:05Z

Modified

2026-09-10T03:48:30Z

Severity

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

Summary

Cesanta mJS mjs_tok.c skip_spaces_and_comments heap-based overflow

Details

A vulnerability was determined in Cesanta mJS up to 1.26. Affected is the function skip_spaces_and_comments of the file src/mjs_tok.c. Executing a manipulation can lead to heap-based buffer overflow. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

Database specific

{
    "cna_assigner": "VulDB",
    "cwe_ids": [
        "CWE-119",
        "CWE-122"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86716.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "1.0"
                },
                {
                    "last_affected": "1.0"
                },
                {
                    "introduced": "1.1"
                },
                {
                    "last_affected": "1.1"
                },
                {
                    "introduced": "1.2"
                },
                {
                    "last_affected": "1.2"
                },
                {
                    "introduced": "1.3"
                },
                {
                    "last_affected": "1.3"
                },
                {
                    "introduced": "1.4"
                },
                {
                    "last_affected": "1.4"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/cesanta/mjs

Affected ranges

Type

GIT

Repo

https://github.com/cesanta/mjs

Events

Introduced

422ca2706b4a334584341c2fc7e4c6f125280f69

Last Affected

30aa0f84dbb274afdd95006ed18431e131654cac

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "1.5"
        },
        {
            "last_affected": "1.5"
        },
        {
            "introduced": "1.6"
        },
        {
            "last_affected": "1.6"
        },
        {
            "introduced": "1.7"
        },
        {
            "last_affected": "1.7"
        },
        {
            "introduced": "1.8"
        },
        {
            "last_affected": "1.8"
        },
        {
            "introduced": "1.9"
        },
        {
            "last_affected": "1.9"
        },
        {
            "introduced": "1.10"
        },
        {
            "last_affected": "1.10"
        },
        {
            "introduced": "1.11"
        },
        {
            "last_affected": "1.11"
        },
        {
            "introduced": "1.12"
        },
        {
            "last_affected": "1.12"
        },
        {
            "introduced": "1.13"
        },
        {
            "last_affected": "1.13"
        },
        {
            "introduced": "1.14"
        },
        {
            "last_affected": "1.14"
        },
        {
            "introduced": "1.15"
        },
        {
            "last_affected": "1.15"
        },
        {
            "introduced": "1.16"
        },
        {
            "last_affected": "1.16"
        },
        {
            "introduced": "1.17"
        },
        {
            "last_affected": "1.17"
        },
        {
            "introduced": "1.18"
        },
        {
            "last_affected": "1.18"
        },
        {
            "introduced": "1.19"
        },
        {
            "last_affected": "1.19"
        },
        {
            "introduced": "1.20"
        },
        {
            "last_affected": "1.20"
        },
        {
            "introduced": "1.21"
        },
        {
            "last_affected": "1.21"
        },
        {
            "introduced": "1.22"
        },
        {
            "last_affected": "1.22"
        },
        {
            "introduced": "1.23"
        },
        {
            "last_affected": "1.23"
        },
        {
            "introduced": "1.24"
        },
        {
            "last_affected": "1.24"
        },
        {
            "introduced": "1.25"
        },
        {
            "last_affected": "1.25"
        },
        {
            "introduced": "1.26"
        },
        {
            "last_affected": "1.26"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

1.*

1.10

1.11

1.12

1.13

1.14

1.15

1.16

1.17

1.18

1.19

1.19.1

1.19.2

1.19.3

1.19.4

1.19.5

1.19.6

1.20

1.20.1

1.21

1.22

1.22.1

1.23

1.24

1.25

1.26

1.5

1.6

1.7

1.8

1.9

Other

ddd

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86716.json"