High
Security advisory
privacyIDEA version 2.23.1 and earlier contains a Improper Input Validation vulnerability in token validation api that can result in Denial-of-Service. This attack appear to be exploitable via http request with user=&pass= to /validate/check url. This vulnerability appears to have been fixed in 2.23.2.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-1000809
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 11:06 UTC · Revision 1
Source evidence
privacyIDEA version 2.23.1 and earlier contains a Improper Input Validation vulnerability in token validation api that can result in Denial-of-Service. This attack appear to be exploitable via http request with user=&pass= to /validate/check url. This vulnerability appears to have been fixed in 2.23.2.
osv:CVE-2018-1000809
Complete source record
{
"id": "669b37cd83e91773431d18d4cbfaf6ac0cb5c971e906500b59bb285cc258d7ca",
"url": "https://osv.dev/vulnerability/CVE-2018-1000809",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-1000809",
"summary": "privacyIDEA version 2.23.1 and earlier contains a Improper Input Validation vulnerability in token validation api that can result in Denial-of-Service. This attack appear to be exploitable via http request with user=&pass= to /validate/check url. This vulnerability appears to have been fixed in 2.23.2.",
"evidence": "osv:CVE-2018-1000809",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-1000809",
"aliases": [
"CVE-2018-1000809",
"GHSA-7qqv-r2q4-jxhm",
"PYSEC-2018-20"
],
"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/privacyidea/privacyidea",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "923de03c1bfd65817ebe0d4f884b6ca1c89c3e8b"
},
{
"fixed": "a3edc09beffa2104f357fe24971ea3211ce40751"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:privacyidea:privacyidea:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.23.1"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "a3edc09beffa2104f357fe24971ea3211ce40751"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v2.23.1",
"v2.23",
"v2.23dev8",
"v2.23dev7",
"v2.23dev6",
"v2.23dev4",
"v2.23dev3",
"v2.23dev2",
"v2.22",
"v2.22dev7",
"v2.22dev6",
"v2.22dev5",
"v2.22dev4",
"v2.22dev3",
"v2.22dev1",
"v2.22dev0",
"v2.21",
"v2.21dev2",
"v2.20",
"v2.19.1-1",
"v2.19.1",
"v2.19",
"v2.18",
"v2.18dev5",
"v2.17",
"v2.16",
"v2.16dev5",
"v2.16dev4",
"v2.15",
"v2.14",
"v2.13",
"v2.12",
"v2.11",
"v2.10",
"v2.10dev2",
"v2.9",
"v2.8",
"v2.7",
"v2.6",
"v2.4",
"v2.3",
"v2.3dev3",
"v2.3dev1",
"v2.2",
"v2.1",
"v2.0",
"v1.5.1",
"v1.4",
"v1.3.3",
"v1.3.2",
"v1.3.1",
"v1.3",
"v1.3-dev5",
"v1.3dev4",
"v1.3dev3",
"v1.3dev2",
"v1.2.1",
"v1.2",
"v1.1",
"v1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-1000809.json"
}
}
],
"modified": "2026-10-20T10:52:50.929796062Z",
"provider": "osv",
"references": [
"https://github.com/privacyidea/privacyidea/commit/a3edc09beffa2104f357fe24971ea3211ce40751",
"https://github.com/privacyidea/privacyidea/issues/1227"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2018-1000809",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 383950,
"published_at": "2018-10-08T15:29:01.057+00:00"
}