Coder before 2.29.20, 2.33.0 before 2.33.12, 2.34.0 before 2.34.8, and 2.35.0 before 2.35.4 contains an improper hostname validation flaw in GetWorkspaceProxyByHostname whose SIMILAR TO pattern performs a prefix match, so any domain that is a string prefix of a workspace-proxy access URL is trusted as a proxy. Attackers owning such a domain can lure an authenticated victim to a crafted /api/v2/applications/auth-redirect link, capture the redirected application_connect API key, and replay it to access the victim's workspace apps.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-522"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111927.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "2.33.0"
},
{
"fixed": "2.33.12"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
]
}{
"extracted_events": [
{
"range": [
{
"introduced": "2.35.0"
},
{
"fixed": "2.35.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "2.34.0"
},
{
"fixed": "2.34.8"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.29.20"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}