Apache::Session::Generate::SHA256 versions before 1.3.19 for Perl create insecure session ids_CVE-2026-8503

{
    "lastseen": "",
    "description": "Apache::Session::Generate::SHA256 versions before 1.3.19 for Perl create insecure session ids.\n\nApache::Session::Generate::SHA256 generated session ids insecurely. The default session id generator returns a SHA-256 hash of the built-in rand() function, the epoch time, and the PID, that is hashed again. These are predictable, low-entropy sources. Predicable session ids could allow an attacker to gain access to systems.\n\nNote that version 1.3.19 has a fallback without warning to use insecure session generation method if the call to Crypt::URandom::urandom fails. However, this is unlikely as Crypt::URandom is a hardcoded requirement of the module.\n\nThis issue is similar to CVE-2025-40931 for Apache::Session::Generate::MD5.",
    "published": "2026-05-15T11:06:29.777Z",
    "modified": "2026-05-15T15:37:28.791Z",
    "type": "cve",
    "title": "Apache::Session::Generate::SHA256 versions before 1.3.19 for Perl create insecure session ids",
    "source": "CPANSec",
    "references": "https://metacpan.org/release/GUIMARD/Apache-Session-Browseable-1.3.19/changes\nhttps://metacpan.org/release/GUIMARD/Apache-Session-Browseable-1.3.19/diff/GUIMARD/Apache-Session-Browseable-1.3.18#lib/Apache/Session/Generate/SHA256.pm\nhttps://github.com/LemonLDAPNG/Apache-Session-Browseable/commit/cc915cbbd266776eec3dd8bf4748b15fa827dbd0.patch\nhttps://www.cve.org/CVERecord?id=CVE-2025-40931\nhttps://www.cve.org/CVERecord?id=CVE-2025-40932",
    "id": "CVE-2026-8503",
    "bulletinFamily": "",
    "cwe": [
        "CWE-340",
        "CWE-338"
    ],
    "cvelist": null,
    "sourceData": "GUIMARD Apache::Session::Generate::SHA256 0",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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": "Apache::Session::Generate::SHA256",
    "version": "0",
    "vendor": "GUIMARD",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}