CVE-2026-42615_CVE-2026-42615

7.2 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Description

GCHQ CyberChef before 11.0.0 allows XSS via Show Base64 offsets, as demonstrated by the /#recipe=Show_Base64_offsets('%3Cscript substring.

Basic Information

ID CVE-2026-42615

Source mitre

Published Apr 29, 2026 at 02:55

Modified Apr 29, 2026 at 02:56

Affected Product

Vendor GCHQ

Product CyberChef

Affected Versions GCHQ CyberChef 0

CWE Classification

CWE-79

References

{
    "lastseen": "",
    "description": "GCHQ CyberChef before 11.0.0 allows XSS via Show Base64 offsets, as demonstrated by the /#recipe=Show_Base64_offsets('%3Cscript substring.",
    "published": "2026-04-29T02:55:53.171Z",
    "modified": "2026-04-29T02:56:14.260Z",
    "type": "cve",
    "title": "CVE-2026-42615",
    "source": "mitre",
    "references": "https://github.com/gchq/CyberChef/issues/2344\nhttps://github.com/gchq/CyberChef/commit/9641ae07f92e9af50f10e978385465b2f4a36c4d\nhttps://github.com/gchq/CyberChef/compare/v10.24.0...v11.0.0\nhttps://github.com/gchq/CyberChef/pull/2346",
    "id": "CVE-2026-42615",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "GCHQ CyberChef 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "CyberChef",
    "version": "0",
    "vendor": "GCHQ",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}