{"id":"CVE-2026-111934","published":"2026-10-17T19:16:36.497","lastModified":"2026-10-17T19:16:36.497","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.","cvssScore":3.7,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","cwes":["CWE-348"],"vendors":[],"products":[],"references":[{"url":"https://github.com/coder/coder/security/advisories/GHSA-vprw-xcrv-287h","tags":[]},{"url":"https://www.vulncheck.com/advisories/coder-before-2.34.7-ip-spoofing-via-x-forwarded-for-header","tags":[]}],"exploitRefs":[{"url":"https://github.com/coder/coder/security/advisories/GHSA-vprw-xcrv-287h","tags":[]}],"hasPoc":true,"ai":null}