Skip to content
CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-111934

Coder before 2.34.7 IP Spoofing via X-Forwarded-For Header

Description

Coder before 2.34.7 contains an IP spoofing vulnerability in the ExtractRealIPAddress middleware that trusts the leftmost, client-supplied X-Forwarded-For value instead of the client IP appended by a reverse proxy. Attackers can send forged X-Forwarded-For values through appending proxies to bypass per-IP rate limits on login, one-time passcode, and password validation endpoints, enabling brute-force attacks, and to falsify IP addresses recorded in audit logs.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

coder coder

Default version status: unaffected

  • 0 to < 2.34.7affected
  • 2.34.7unaffected
pkg:golang/github.com/coder/coder/v2

References