{
    "id": "CVE-2011-1487",
    "published": "2011-04-11 18:55:03",
    "last_modified": "2026-06-16 23:29:28",
    "cvss_score": "5.0",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
    "cwe": "CWE-264",
    "description": "The (1) lc, (2) lcfirst, (3) uc, and (4) ucfirst functions in Perl 5.10.x, 5.11.x, and 5.12.x through 5.12.3, and 5.13.x through 5.13.11, do not apply the taint attribute to the return value upon processing tainted input, which might allow context-dependent attackers to bypass the taint protection mechanism via a crafted string.",
    "epss_score": "0.10580",
    "epss_percentile": "0.95636",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-28 18:17:09",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "perl",
            "product": "perl"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "35554",
            "title": "Perl 5.x - 'lc()' / 'uc()' TAINT Mode Protection Security Bypass",
            "date": "2011-03-30",
            "url": "https://www.exploit-db.com/exploits/35554"
        }
    ],
    "refs_list": [
        "http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057891.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057971.html",
        "http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html",
        "http://openwall.com/lists/oss-security/2011/04/01/3",
        "http://openwall.com/lists/oss-security/2011/04/04/35",
        "http://perl5.git.perl.org/perl.git/commit/539689e74a3bcb04d29e4cd9396de91a81045b99",
        "http://rt.perl.org/rt3/Public/Bug/Display.html?id=87336",
        "http://secunia.com/advisories/43921",
        "http://secunia.com/advisories/44168",
        "http://www.debian.org/security/2011/dsa-2265",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2011:091",
        "http://www.securityfocus.com/bid/47124",
        "https://bugzilla.redhat.com/show_bug.cgi?id=692844",
        "https://bugzilla.redhat.com/show_bug.cgi?id=692898",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/66528",
        "http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057891.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057971.html",
        "http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html",
        "http://openwall.com/lists/oss-security/2011/04/01/3",
        "http://openwall.com/lists/oss-security/2011/04/04/35",
        "http://perl5.git.perl.org/perl.git/commit/539689e74a3bcb04d29e4cd9396de91a81045b99",
        "http://rt.perl.org/rt3/Public/Bug/Display.html?id=87336",
        "http://secunia.com/advisories/43921",
        "http://secunia.com/advisories/44168",
        "http://www.debian.org/security/2011/dsa-2265"
    ]
}