Medium
Security advisory
wire-server is an open-source back end for Wire, a secure collaboration platform. Before version 2.106.0, the CORS ` Access-Control-Allow-Origin ` header set by `nginz` is set for all subdomains of `.wire.com` (including `wire.com`). This means that if somebody were to find an XSS vector in any of the subdomains, they could use it to talk to the Wire API using the user's Cookie. A patch does not exist, but a workaround does. To make sure that a compromise of one subdomain does not yield access to the cookie of another, one may limit the `Access-Control-Allow-Origin` header to apps that actually require the cookie (account-pages, team-settings and the webapp).
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-41101
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 11:20 UTC · Revision 1
Source evidence
wire-server is an open-source back end for Wire, a secure collaboration platform. Before version 2.106.0, the CORS ` Access-Control-Allow-Origin ` header set by `nginz` is set for all subdomains of `.wire.com` (including `wire.com`). This means that if somebody were to find an XSS vector in any of the subdomains, they could use it to talk to the Wire API using the user's Cookie. A patch does not exist, but a workaround does. To make sure that a compromise of one subdomain does not yield access to the cookie of another, one may limit the `Access-Control-Allow-Origin` header to apps that actually require the cookie (account-pages, team-settings and the webapp).
osv:CVE-2021-41101
Complete source record
{
"id": "07abe922a546e394667a4f326504214d9e55e91ee4786b2c9d7fe7df2c9f4374",
"url": "https://osv.dev/vulnerability/CVE-2021-41101",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-41101",
"summary": "wire-server is an open-source back end for Wire, a secure collaboration platform. Before version 2.106.0, the CORS ` Access-Control-Allow-Origin ` header set by `nginz` is set for all subdomains of `.wire.com` (including `wire.com`). This means that if somebody were to find an XSS vector in any of the subdomains, they could use it to talk to the Wire API using the user's Cookie. A patch does not exist, but a workaround does. To make sure that a compromise of one subdomain does not yield access to the cookie of another, one may limit the `Access-Control-Allow-Origin` header to apps that actually require the cookie (account-pages, team-settings and the webapp).",
"evidence": "osv:CVE-2021-41101",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-41101",
"aliases": [
"CVE-2021-41101",
"GHSA-v7xx-cx8m-g66p"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/wireapp/wire-server",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "c43d80488139605bc939a3b61613e9181c0553f9"
}
],
"database_specific": {
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{
"cpe": "cpe:2.3:a:wire:wire_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.106.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
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"database_specific": {
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}
}
],
"modified": "2026-10-20T10:53:56.049838380Z",
"provider": "osv",
"references": [
"https://github.com/wireapp/wire-server/security/advisories/GHSA-v7xx-cx8m-g66p"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-41101",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 384772,
"published_at": "2021-09-30T20:15:07.587+00:00"
}