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.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sat, 17 Oct 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Coder before 2.34.7 IP Spoofing via X-Forwarded-For Header | |
| First Time appeared |
Coder
Coder coder |
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| Weaknesses | CWE-348 | |
| CPEs | cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Coder
Coder coder |
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| References |
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| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-17T18:46:44.142Z
Reserved: 2026-10-17T12:20:52.372Z
Link: CVE-2026-111934
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-17T19:16:36.497
Modified: 2026-10-17T19:16:36.497
Link: CVE-2026-111934
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses