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CVE-2026-55430 Coder's subdomain workspace app routing trusts unauthenticated X-Forwarded-Host header, enabling cross-app data access

🗓️ 08 Jul 2026 00:03:29Reported by GoogleType 
osv
 osv🔗 osv.dev👁 2 Views

Workspace app routing trusts Forwarded Host header, enabling cross app data access.

Related
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-55430
8 Jul 202600:03
–attackerkb
CVE		CVE-2026-55430
8 Jul 202600:03
–cve
Cvelist		CVE-2026-55430 Coder's subdomain workspace app routing trusts unauthenticated X-Forwarded-Host header, enabling cross-app data access
8 Jul 202600:03
–cvelist
EUVD		EUVD-2026-42136
8 Jul 202600:03
–euvd
Github Security Blog		Coder's subdomain workspace app routing trusts unauthenticated X-Forwarded-Host header, enabling cross-app data access
6 Jul 202621:05
–github
NVD		CVE-2026-55430
8 Jul 202601:16
–nvd
OSV		GHSA-5G4W-3VW9-478W Coder's subdomain workspace app routing trusts unauthenticated X-Forwarded-Host header, enabling cross-app data access
6 Jul 202621:05
–osv
OSV		GO-2026-5917 Coder's subdomain workspace app routing trusts unauthenticated X-Forwarded-Host header, enabling cross-app data access in github.com/coder/coder
7 Jul 202616:41
–osv
Positive Technologies		PT-2026-56074
6 Jul 202600:00
–ptsecurity
Vulnrichment		CVE-2026-55430 Coder's subdomain workspace app routing trusts unauthenticated X-Forwarded-Host header, enabling cross-app data access
8 Jul 202600:03
–vulnrichment
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08 Jul 2026 08:13Current
6Medium risk
Vulners AI Score6
CVSS 3.15.8
Forwarded Host headerSubdomain routingCross app accessUntrusted headerWorkspace app
2