CVE-2026-111927
Coder before 2.35.4 Credential Theft via Workspace Proxy Hostname Prefix Match
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-522 |
| Vendor | coder |
| Product | coder |
| Published | Oct 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
coder / coder
2.35.0 < 2.35.4
coder / coder
2.34.0 < 2.34.8
coder / coder
2.33.0 < 2.33.12
coder / coder
0 < 2.29.20