Medium
Security advisory
showdoc is vulnerable to URL Redirection to Untrusted Site
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-4000
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 11:54 UTC · Revision 1
Source evidence
showdoc is vulnerable to URL Redirection to Untrusted Site
osv:CVE-2021-4000
Complete source record
{
"id": "67686b06da55de000c5bacdfff64132ab58d1f5f8751d2f2536761148ada85c4",
"url": "https://osv.dev/vulnerability/CVE-2021-4000",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-4000",
"summary": "showdoc is vulnerable to URL Redirection to Untrusted Site",
"evidence": "osv:CVE-2021-4000",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-4000",
"aliases": [
"CVE-2021-4000",
"GHSA-8c9x-wfgj-v78w"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/star7th/showdoc",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "c7f10033eba5f2b5a537f9af9ba2379138e67138"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"fixed": "c7f10033eba5f2b5a537f9af9ba2379138e67138"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v2.9.13",
"v2.9.12",
"v2.9.11",
"v2.9.10",
"v2.9.9",
"v2.9.8",
"v2.9.7",
"v2.9.6",
"v2.9.5",
"v2.9.4",
"v2.9.3",
"v2.9.2",
"v2.9.1",
"v2.9.0",
"v2.8.16",
"v2.8.15",
"2.8.14",
"v2.8.13",
"v2.8.12",
"v2.8.11",
"v2.8.10",
"v2.8.9",
"v2.8.8",
"v2.8.7",
"v2.8.6",
"v2.8.5",
"v2.8.3",
"v2.8.2",
"v2.8.1",
"v2.8.0",
"v2.7.1",
"v2.7.0",
"v2.6.7",
"v2.6.6",
"v2.6.5",
"v2.6.3",
"v2.6.2",
"v2.6.1",
"v2.5.5",
"v2.5.3",
"v2.5.2",
"v2.5.1",
"v2.4.17",
"v2.4.16",
"v2.4.15",
"v2.4.13",
"v2.4.12",
"v2.4.11",
"v2.4.10",
"v2.4.9",
"v2.4.8",
"v2.4.6",
"v2.4.5",
"v2.4.3",
"v2.4.2",
"v2.4.1",
"v2.4.0",
"v2.3.3",
"v2.3.0",
"v2.2.2",
"v2.2.1",
"v2.2.0",
"v2.1.4",
"v2.1.3",
"v2.1.2",
"v2.1.1",
"v2.1.0",
"v2.0.10",
"v2.0.9",
"v2.0.8",
"v2.0.7",
"v2.0.6",
"v2.0.5",
"v2.0.4",
"v2.0.3",
"v2.0.1",
"v2.0",
"v1.8.6",
"v1.8.5",
"v1.8.4",
"v1.8.3",
"v1.8.2",
"v1.8.1",
"v1.8.0",
"v1.7.1",
"v1.7.0",
"v1.6.2",
"v1.6.1",
"v1.6.0",
"v1.5.3",
"v1.5.2",
"v1.5.1",
"v1.5.0",
"v1.4.7",
"v1.4.6",
"v1.4.5",
"v1.4.4",
"v1.4.3",
"v1.4.2",
"v1.4.1",
"v1.4.0",
"v1.3.8",
"v1.3.7",
"v1.3.6",
"v1.3.5",
"v1.3.4",
"v1.3.3",
"v1.3.2",
"v1.3.1",
"v1.3.0",
"v1.2.6",
"v1.2.5",
"v1.2.4",
"v1.2.3",
"v1.1.5",
"v1.1.4",
"v1.1.3",
"v1.1.2",
"v1.1.1",
"v1.1.0",
"v1.0.5",
"v1.0.3",
"v1.0.2",
"v1.0.1",
"v1.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4000.json"
}
}
],
"modified": "2026-10-20T10:54:55.362712040Z",
"provider": "osv",
"references": [
"https://github.com/star7th/showdoc/commit/c7f10033eba5f2b5a537f9af9ba2379138e67138",
"https://huntr.dev/bounties/e4d803e0-3104-432c-80b3-34bc453c8962"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-4000",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 386465,
"published_at": "2021-12-03T11:15:07.883+00:00"
}