{
"id": "GHSA-4hq8-gmxx-h6w9",
"aliases": [
"CVE-2020-27846"
],
"details": "### Impact\n\nThere are three vulnerabilities in the go `encoding/xml` package that can allow an attacker to forge part of a signed XML document. For details on this vulnerability see [xml-roundtrip-validator](https://github.com/mattermost/xml-roundtrip-validator)\n\n### Patches\n\nIn version 0.4.3, all XML input is validated prior to being parsed.",
"summary": "XML Processing error in github.com/crewjam/saml",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.4.3"
}
]
}
],
"package": {
"name": "github.com/crewjam/saml",
"ecosystem": "Go"
}
}
],
"modified": "2025-09-19T17:41:50Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"published": "2021-06-23T17:29:42Z",
"references": [
{
"url": "https://github.com/crewjam/saml/security/advisories/GHSA-4hq8-gmxx-h6w9",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27846",
"type": "ADVISORY"
},
{
"url": "https://github.com/crewjam/saml/commit/da4f1a0612c0a8dd0452cf8b3c7a6518f6b4d053",
"type": "WEB"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1907670",
"type": "WEB"
},
{
"url": "https://github.com/crewjam/saml",
"type": "PACKAGE"
},
{
"url": "https://grafana.com/blog/2020/12/17/grafana-6.7.5-7.2.3-and-7.3.6-released-with-important-security-fix-for-grafana-enterprise",
"type": "WEB"
},
{
"url": "https://lists.fedoraproject.org/archives/list/[email protected] /message/3YUTKIRWT6TWU7DS6GF3EOANVQBFQZYI",
"type": "WEB"
},
{
"url": "https://lists.fedoraproject.org/archives/list/[email protected] /message/ICP3YRY2VUCNCF2VFUSK77ZMRIC77FEM",
"type": "WEB"
},
{
"url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities",
"type": "WEB"
},
{
"url": "https://pkg.go.dev/vuln/GO-2021-0058",
"type": "WEB"
},
{
"url": "https://security.netapp.com/advisory/ntap-20210205-0002",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-115",
"CWE-287"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2021-05-21T20:54:26Z"
}
}