High
Security advisory
The SAML2 library before 1.10.4, 2.x before 2.3.5, and 3.x before 3.1.1 in SimpleSAMLphp has a Regular Expression Denial of Service vulnerability for fraction-of-seconds data in a timestamp.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-6519
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:23 UTC · Revision 1
Source evidence
The SAML2 library before 1.10.4, 2.x before 2.3.5, and 3.x before 3.1.1 in SimpleSAMLphp has a Regular Expression Denial of Service vulnerability for fraction-of-seconds data in a timestamp.
osv:CVE-2018-6519
Complete source record
{
"id": "b54d9c59efc4a6c7730b98b93de3fa5fd571671bd46b52994b1041c9235ddeca",
"url": "https://osv.dev/vulnerability/CVE-2018-6519",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-6519",
"summary": "The SAML2 library before 1.10.4, 2.x before 2.3.5, and 3.x before 3.1.1 in SimpleSAMLphp has a Regular Expression Denial of Service vulnerability for fraction-of-seconds data in a timestamp.",
"evidence": "osv:CVE-2018-6519",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-6519",
"aliases": [
"CVE-2018-6519",
"GHSA-hhm8-2j4g-mpgg"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/simplesamlphp/saml2",
"type": "GIT",
"events": [
{
"introduced": "a8d493c6eef80b623f3dd77ef04c7cb71468f951"
},
{
"fixed": "be97e44eb80dbc823dd0f1d4e78d668ff1f44522"
},
{
"introduced": "80bc9628c03e3c0d2774488cf2f3dc3b9c2ddf5b"
},
{
"fixed": "e4262bbe7ec7a4cc90f79532ae5a7d9590e6e2a2"
},
{
"introduced": "cea679a3113d1f8198ab7d0a734de740412d0d0d"
},
{
"fixed": "726404bf7b4085a9eb9c9a869af1ecc146bd8f6d"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.0"
},
{
"fixed": "1.10.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.0.0"
},
{
"fixed": "2.3.5"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.1.1"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v3.1.0",
"v3.0.3",
"v3.0.2",
"v3.0.1",
"v3.0.0",
"v2.3.4",
"v2.3.3",
"v1.10.3",
"v1.8",
"v1.9",
"v1.10.2",
"v2.3.2",
"v2.3.1",
"v1.10.1",
"v1.10",
"v2.3",
"v2.2",
"v2.1",
"v1.7.2",
"v2.0.1",
"v2.0.0",
"v1.7.1",
"v0.8.1",
"v1.7.0",
"v0.8.0",
"v1.6.1",
"v0.7.1",
"v1.6.0",
"v0.7.0",
"v1.5.4",
"v0.6.4",
"v1.5.3",
"v0.6.3",
"1.5.3",
"v1.5.2",
"v0.6.2",
"v1.5.1",
"v0.6.1",
"v1.5.0",
"v0.6.0",
"v1.4.0",
"v0.5.0",
"v1.3.2",
"v0.4.2",
"v1.3.1",
"v0.4.1",
"v1.3.0",
"v0.4.0",
"v1.2.0",
"v0.3.0",
"v1.1.0",
"v1.0.0",
"v0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-6519.json"
}
}
],
"modified": "2026-10-24T10:30:28.094797651Z",
"provider": "osv",
"references": [
"https://simplesamlphp.org/security/201801-01",
"https://www.debian.org/security/2018/dsa-4127"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*"
],
"vendor_product": "simplesamlphp:saml2",
"extracted_events": [
{
"range": [
{
"introduced": "1.0.0"
},
{
"fixed": "1.10.4"
},
{
"introduced": "1.0.0"
},
{
"fixed": "1.10.4"
},
{
"introduced": "2.0.0"
},
{
"fixed": "2.3.5"
},
{
"introduced": "2.0.0"
},
{
"fixed": "2.3.5"
},
{
"introduced": "3.0.0"
},
{
"fixed": "3.1.1"
},
{
"introduced": "3.0.0"
},
{
"fixed": "3.1.1"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-6519",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 431972,
"published_at": "2018-02-02T01:29:00.23+00:00"
}