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TI-2026-45162 Aliases CVE-2026-63329

Improper output encoding in warp-tech warpgate

Priority LOW 22CWE-116Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-290.

Summary

Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. Prior to 0.25.6, copy_server_request in warpgate-protocol-http/src/proxy.rs forwards a client-supplied x-warpgate-username header before inject_own_headers appends the authenticated username. Because the request builder preserves repeated values, a proxied backend that trusts the first x-warpgate-username value can authorize an authenticated attacker as another user. The same forwarding policy also accepts the reserved x-warpgate-authentication-type header, and warpgate-common/src/http_headers.rs does not exclude either reserved identity header. This issue is fixed in version 0.25.6.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00308 23rd percentileScored 2026-11-07
Fix Fixed warpgate (warp-tech): 0.25.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
warp-techwarpgatebefore 0.25.60.25.6Patch availableCNA
  • warpgate Vendorwarp-tech Affected before 0.25.6 Fixed in 0.25.6 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:warpgate_project:warpgate:*:*:*:*:*:*:*:*——warp-tech
  • cpe:2.3:a:warpgate_project:warpgate:*:*:*:*:*:*:*:* Versions — — ·warp-tech

Remediation

  • Fix · CNA warpgate (warp-tech) Fixed in 0.25.6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-63329

References

Other 3

  • TI-2023-18898 User login confusion with SSO in warpgate CVSS 3.1HIGH 8.8
  • TI-2026-30510 Russh: Pre-auth DoS via unbounded allocation in keyboard-interactive auth CVSS 3.1HIGH 7.5
  • TI-2024-29059 Russh has an OOM Denial of Service due to allocation of untrusted amount CVSS 3.1HIGH 7.5
  • TI-2026-45163 Improper authorization in warp-tech warpgate CVSS 3.1HIGH 7.7
  • TI-2026-32313 Warpgate: SSO CSRF -- State Token Not Validated on Return CVSS 3.1MEDIUM 6.5
  • TI-2025-34558 Russh is missing an overflow check during channel windows adjust CVSS 3.1MEDIUM 6.5
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences