High
Security advisory
Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with "cf push" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-5420
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:15 UTC · Revision 1
Source evidence
Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with "cf push" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.
osv:CVE-2020-5420
Complete source record
{
"id": "07be304c2e272623c5225bed5d0565be93a7e258f2f08b8a760aee3049f0edcf",
"url": "https://osv.dev/vulnerability/CVE-2020-5420",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-5420",
"summary": "Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with \"cf push\" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.",
"evidence": "osv:CVE-2020-5420",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-5420",
"aliases": [
"CVE-2020-5420"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/cloudfoundry/cf-deployment",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "62c1fb8177214705123eeb9def1c7b8367575612"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:cloudfoundry:cf-deployment:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "13.15.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v13.14.0",
"v13.13.0",
"v13.12.0",
"v13.11.0",
"v13.10.0",
"v13.9.0",
"v13.8.0",
"v13.7.0",
"v13.6.0",
"v13.5.0",
"v13.4.0",
"v13.3.0",
"v13.2.0",
"v13.1.0",
"v13.0.0",
"v12.45.0",
"v12.44.0",
"v12.43.0",
"v12.42.0",
"v12.41.0",
"v12.40.0",
"v12.39.0",
"v12.38.0",
"v12.37.0",
"v12.36.0",
"v12.35.0",
"v12.34.0",
"v12.33.0",
"v12.32.0",
"v12.31.0",
"v12.30.0",
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"v12.27.0",
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"v12.23.0",
"v12.22.0",
"v12.21.0",
"v12.20.0",
"v12.19.0",
"v12.18.0",
"v12.17.0",
"v12.16.0",
"v12.15.0",
"v12.14.0",
"v12.13.0",
"v12.12.0",
"v12.11.0",
"v12.10.0",
"v12.9.0",
"v12.8.0",
"v12.7.0",
"v12.6.0",
"v12.5.0",
"v12.4.0",
"v12.3.0",
"v12.2.0",
"v12.1.0",
"v12.0.0",
"v11.2.0",
"v11.1.0",
"v11.0.0",
"v10.1.0",
"v10.0.0",
"v7.9.0",
"v7.8.0",
"v7.6.0",
"v7.5.0",
"v7.4.0",
"v7.3.0",
"v7.2.0",
"v7.1.0",
"v7.0.0",
"v6.10.0",
"v6.9.0",
"v6.8.0",
"v6.7.0",
"v6.6.0",
"v6.5.0",
"v6.4.0",
"v6.3.0",
"v6.2.0",
"v6.1.0",
"v6.0.0",
"v5.5.0",
"v5.4.0",
"v5.3.0",
"v5.1.0",
"v5.0.0",
"v4.5.0",
"v4.4.0",
"v4.3.0",
"v4.2.0",
"v4.1.0",
"v4.0.0",
"v3.6.0",
"v3.5.0",
"v3.4.0",
"v3.3.0",
"v3.2.0",
"v3.1.0",
"v3.0.0",
"v2.5.0",
"v2.4.0",
"v2.3.0",
"v2.2.0",
"v2.1.0",
"v2.0.0",
"v1.38.0",
"v1.37.0",
"v1.36.0",
"v1.35.0",
"v1.34.0",
"v1.33.0",
"v1.32.0",
"v1.31.0",
"v1.30.0",
"v1.29.0",
"v1.28.0",
"v1.27.0",
"v1.26.0",
"v1.25.0",
"v1.24.0",
"v1.23.0",
"v1.22.0",
"v1.21.0",
"v1.20.0",
"v1.19.0",
"v1.18.0",
"v1.16.0",
"v1.17.0",
"v1.15.0",
"v1.14.0",
"v1.13.0",
"v1.12.0",
"v1.11.0",
"v1.10.0",
"v1.9.0",
"v1.8.0",
"v1.7.0",
"v1.6.0",
"v1.5.0",
"v1.4.0",
"v1.3.0",
"v1.2.0",
"v1.1.0",
"v0.37.0",
"v1.0.0",
"v0.36.0",
"v0.35.0",
"v0.34.0",
"v0.33.0",
"v0.32.0",
"v0.31.0",
"v0.30.0",
"v0.28.0",
"v0.29.0",
"v0.15.0",
"v0.13.0",
"v0.14.0",
"v0.12.0",
"v0.11.0",
"v0.10.0",
"v0.9.1",
"v0.9.0",
"v0.8.0",
"v0.3.0",
"v0.7.0",
"v0.5.0",
"v0.2.1",
"v0.2.2",
"v0.2.0",
"v0.1.0",
"v0.0.2",
"v0.0.1",
"v0.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-5420.json"
}
}
],
"modified": "2026-10-24T10:30:26.143297064Z",
"provider": "osv",
"references": [
"https://www.cloudfoundry.org/blog/cve-2020-5420"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:cloudfoundry:gorouter:*:*:*:*:*:*:*:*"
],
"vendor_product": "cloudfoundry:gorouter",
"extracted_events": [
{
"range": [
{
"fixed": "0.206.0"
}
],
"source": "CPE_RANGE"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-5420",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 431549,
"published_at": "2020-09-03T01:15:10.857+00:00"
}