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    CVE-2026-111927

    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.

    Published:Oct 17, 2026
    Last Modified:Oct 21, 2026
    EPS:Oct 17, 2026
    EPSS Score:0.00205
    CVSS Score:7.7

    Affected Products

    Vendor
    Coder
    Product
    Coder

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-121967 (CVSS 2.3) — Coder 2.28.0 before 2.29.22, 2.30.0 before 2.34.13, 2.35.0 before 2.35.10, 2.36.0 before 2.36.8, 2.37.0 before…
    CVE-2026-118687 (CVSS 8.3) — Coder before 2.29.21, 2.30.0 before 2.34.12, 2.35.0 before 2.35.9, 2.36.0 before 2.36.7, and 2.37.0 before 2.3…
    CVE-2026-111934 (CVSS 6.3) — Coder before 2.34.7 contains an IP spoofing vulnerability in the ExtractRealIPAddress middleware that trusts t…
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    CVE-2026-111932 (CVSS 4.8) — Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a stored H…
    CVE-2026-111931 (CVSS 5.3) — Coder from 2.0.0 before 2.34.8 contains an open redirect vulnerability in handleAPIKeySmuggling that allows at…
    CVE-2026-111930 (CVSS 5.3) — Coder from 2.26.0 before 2.34.8 contains an incorrect authorization flaw in the GET /api/v2/workspaces/{id}/ac…
    CVE-2026-111929 (CVSS 6) — Coder from 2.30.0 before 2.34.8 contains an authorization bypass vulnerability in the provisioner daemon Downl…
    CVE-2026-111928 (CVSS 5.3) — Coder from 2.0.0 before 2.34.8 contains an incorrect authorization vulnerability in the acl_allow rule of code…
    CVE-2026-111926 (CVSS 4.8) — Coder from 2.10.0 before 2.34.8 has an unauthenticated agent debug HTTP server on 127.0.0.1:2113 whose /debug/…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High