Coder before 2.35.4 Credential Theft via Workspace Proxy Hostname Prefix Match
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.
CVE-2026-111927
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-111927
coder
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
coder
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
coder
Source reference: /containers/cna/affected/2/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
coder
Source reference: /containers/cna/affected/3/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "coder",
"product": "coder",
"versions": [
{
"status": "affected",
"version": "2.35.0",
"lessThan": "2.35.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2.35.4",
"versionType": "semver"
}
],
"packageURL": "pkg:golang/github.com/coder/coder/v2",
"defaultStatus": "unaffected"
},
{
"vendor": "coder",
"product": "coder",
"versions": [
{
"status": "affected",
"version": "2.34.0",
"lessThan": "2.34.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2.34.8",
"versionType": "semver"
}
],
"packageURL": "pkg:golang/github.com/coder/coder/v2",
"defaultStatus": "unaffected"
},
{
"vendor": "coder",
"product": "coder",
"versions": [
{
"status": "affected",
"version": "2.33.0",
"lessThan": "2.33.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2.33.12",
"versionType": "semver"
}
],
"packageURL": "pkg:golang/github.com/coder/coder/v2",
"defaultStatus": "unaffected"
},
{
"vendor": "coder",
"product": "coder",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "2.29.20",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2.29.20",
"versionType": "semver"
}
],
"packageURL": "pkg:golang/github.com/coder/coder/v2",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-111927
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #49995 · Revision 1
- Added to Heist Feed
- Publisher date