CVE-2025-65570

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Source

https://cve.org/CVERecord?id=CVE-2025-65570

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-65570.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2025-65570

Published

2025-12-29T00:00:00Z

Modified

2026-07-15T01:48:59.802843785Z

Severity

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

Summary

[none]

Details

A type confusion in jsish 2.0 allows incorrect control flow during execution of the OPNEXT opcode. When an “instanceof” expression uses an array element access as the left-hand operand inside a for-in loop, the instructions implementation leaves an additional array reference on the stack rather than consuming it during OPINSTANCEOF. As a result, OP_NEXT interprets the array as an iterator object and reads the iterCmd function pointer from an invalid structure, potentially causing a crash or enabling code execution depending on heap layout.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/65xxx/CVE-2025-65570.json",
    "cna_assigner": "mitre"
}

References

Affected packages

Git / github.com/pcmacdon/jsish

Affected ranges

Type

GIT

Repo

https://github.com/pcmacdon/jsish

Events

Introduced

8154b7673827f8707065ff61306b8dad89571be3

Last affected

8154b7673827f8707065ff61306b8dad89571be3

Database specific

{
    "cpe": "cpe:2.3:a:jsish:jsish:2.0:*:*:*:*:*:*:*",
    "source": "CPE_STRING",
    "extracted_events": [
        {
            "introduced": "2.0"
        },
        {
            "last_affected": "2.0"
        }
    ]
}

Affected versions

2.*

2.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-65570.json"