{
"id": "GHSA-9w8r-397f-prfh",
"aliases": [
"CVE-2021-20270"
],
"details": "An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the \"exception\" keyword.",
"summary": "Infinite Loop in Pygments",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "1.5"
},
{
"fixed": "2.7.4"
}
]
}
],
"package": {
"name": "Pygments",
"ecosystem": "PyPI"
}
}
],
"modified": "2024-10-14T16:12:14Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
],
"published": "2021-04-20T16:35:47Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20270",
"type": "ADVISORY"
},
{
"url": "https://github.com/pygments/pygments/commit/f91804ff4772e3ab41f46e28d370f57898700333",
"type": "WEB"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1922136",
"type": "WEB"
},
{
"url": "https://github.com/pygments/pygments",
"type": "PACKAGE"
},
{
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/pygments/PYSEC-2021-140.yaml",
"type": "WEB"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html",
"type": "WEB"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html",
"type": "WEB"
},
{
"url": "https://www.debian.org/security/2021/dsa-4889",
"type": "WEB"
},
{
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2021-03-23T17:15:00Z",
"github_reviewed_at": "2021-04-12T20:58:03Z"
}
}