Security advisory
In Helm before versions 2.16.11 and 3.3.2, a Helm plugin can contain duplicates of the same entry, with the last one always used. If a plugin is compromised, this lowers the level of access that an attacker needs to modify a plugin's install hooks, causing a local execution attack. To perform this attack, an attacker must have write access to the git repository or plugin archive (.tgz) while being downloaded (which can occur during a MITM attack on a non-SSL connection). This issue has been patched in Helm 2.16.11 and Helm 3.3.2. As a possible workaround make sure to install plugins using a secure connection protocol like SSL.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-15187
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 10:52 UTC · Revision 1
Source evidence
In Helm before versions 2.16.11 and 3.3.2, a Helm plugin can contain duplicates of the same entry, with the last one always used. If a plugin is compromised, this lowers the level of access that an attacker needs to modify a plugin's install hooks, causing a local execution attack. To perform this attack, an attacker must have write access to the git repository or plugin archive (.tgz) while being downloaded (which can occur during a MITM attack on a non-SSL connection). This issue has been patched in Helm 2.16.11 and Helm 3.3.2. As a possible workaround make sure to install plugins using a secure connection protocol like SSL.
osv:CVE-2020-15187
Complete source record
{
"id": "4b5ac88d76d95e5e33f3b0e09613b87fc02e3349162634d5b601140e803539ad",
"url": "https://osv.dev/vulnerability/CVE-2020-15187",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-15187",
"summary": "In Helm before versions 2.16.11 and 3.3.2, a Helm plugin can contain duplicates of the same entry, with the last one always used. If a plugin is compromised, this lowers the level of access that an attacker needs to modify a plugin's install hooks, causing a local execution attack. To perform this attack, an attacker must have write access to the git repository or plugin archive (.tgz) while being downloaded (which can occur during a MITM attack on a non-SSL connection). This issue has been patched in Helm 2.16.11 and Helm 3.3.2. As a possible workaround make sure to install plugins using a secure connection protocol like SSL.",
"evidence": "osv:CVE-2020-15187",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-15187",
"aliases": [
"BIT-helm-2020-15187",
"CVE-2020-15187",
"GHSA-c52f-pq47-2r9j"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/helm/helm",
"type": "GIT",
"events": [
{
"introduced": "51bdad42756dfaf3234f53ef3d3cb6bcd94144c2"
},
{
"fixed": "73b28bab84490d18ab1b71489a574ee18e229eea"
},
{
"introduced": "e29ce2a54e96cd02ccfce88bee4f58bb6e2a28b6"
},
{
"fixed": "e5077257b6ca106d1f65652b4ca994736d221ab1"
},
{
"fixed": "6aab63765f99050b115f0aec3d6350c85e8da946"
},
{
"fixed": "ac7c07c37d87e09797f714fb57aa5e9cb99d9450"
},
{
"fixed": "b0296c0522e837d65f944beefa3fb64fd08ac304"
},
{
"fixed": "c8d6b01d72c9604e43ee70d0d78fadd54c2d8499"
},
{
"fixed": "d9ef5ce8bad512e325390c0011be1244b8380e4b"
},
{
"fixed": "f2ede29480b507b7d8bb152dd8b6b86248b00658"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.0.0"
},
{
"fixed": "2.16.11"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.3.2"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "6aab63765f99050b115f0aec3d6350c85e8da946"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "ac7c07c37d87e09797f714fb57aa5e9cb99d9450"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "b0296c0522e837d65f944beefa3fb64fd08ac304"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "c8d6b01d72c9604e43ee70d0d78fadd54c2d8499"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "d9ef5ce8bad512e325390c0011be1244b8380e4b"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "f2ede29480b507b7d8bb152dd8b6b86248b00658"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v2.16.10",
"v3.3.1",
"v3.3.0-rc.2",
"v3.3.0",
"v2.16.9",
"v3.3.0-rc.1",
"v2.16.8",
"v2.16.7",
"v3.0.0-beta.5",
"v3.0.0-beta.4",
"v3.0.0-beta.3",
"v3.0.0-beta.2",
"v3.0.0-beta.1",
"v3.0.0-alpha.2",
"v3.0.0-alpha.1",
"v2.10.0-rc.2",
"v2.10.0-rc.1",
"v2.8.0-rc.1",
"v2.7.0",
"v2.7.0-rc1",
"v2.6.0",
"v2.5.0",
"v2.4.0",
"v2.3.0",
"v2.2.0",
"v2.1.0",
"v2.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-15187.json"
}
}
],
"modified": "2026-10-20T10:51:52.566558932Z",
"provider": "osv",
"references": [
"https://github.com/helm/helm/security/advisories/GHSA-c52f-pq47-2r9j",
"https://github.com/helm/helm/commit/6aab63765f99050b115f0aec3d6350c85e8da946",
"https://github.com/helm/helm/commit/ac7c07c37d87e09797f714fb57aa5e9cb99d9450",
"https://github.com/helm/helm/commit/b0296c0522e837d65f944beefa3fb64fd08ac304",
"https://github.com/helm/helm/commit/c8d6b01d72c9604e43ee70d0d78fadd54c2d8499",
"https://github.com/helm/helm/commit/d9ef5ce8bad512e325390c0011be1244b8380e4b",
"https://github.com/helm/helm/commit/f2ede29480b507b7d8bb152dd8b6b86248b00658"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-15187",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 383063,
"published_at": "2020-09-17T22:15:12.647+00:00"
}