CryptX versions before 0.088_001 for Perl have a stack buffer overflow in four AEAD decrypt_verify helpers_CVE-2026-41565

{
    "lastseen": "",
    "description": "CryptX versions before 0.088_001 for Perl have a stack buffer overflow in four AEAD decrypt_verify helpers.\n\nThe gcm_decrypt_verify, ccm_decrypt_verify, chacha20poly1305_decrypt_verify and eax_decrypt_verify XS routines copied the caller-supplied authentication tag into a fixed 144-byte stack buffer (MAXBLOCKSIZE) without checking the supplied length. A longer tag overwrites the stack past the buffer. Version 0.088 added the clamp to gcm_decrypt_verify, and 0.088_001 added it to the other three.\n\nAny caller of an affected helper that forwards an attacker-controlled tag longer than the buffer can trigger the overflow.",
    "published": "2026-05-28T14:13:19.301Z",
    "modified": "2026-05-29T15:53:39.530Z",
    "type": "cve",
    "title": "CryptX versions before 0.088_001 for Perl have a stack buffer overflow in four AEAD decrypt_verify helpers",
    "source": "CPANSec",
    "references": "https://github.com/DCIT/perl-CryptX/commit/57e69e541b0718ca8724c2f61514322a2d859bc1.patch\nhttps://github.com/DCIT/perl-CryptX/commit/7e56347d420aaf43b2ee1586f4a230492ccf1642.patch\nhttps://metacpan.org/release/MIK/CryptX-0.088_001",
    "id": "CVE-2026-41565",
    "bulletinFamily": "",
    "cwe": [
        "CWE-121"
    ],
    "cvelist": null,
    "sourceData": "MIK CryptX 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "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": "CryptX",
    "version": "0",
    "vendor": "MIK",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}