CVE-2026-107271 (CVSS 5.3)

Description

Gophish through 0.12.1 contains a rate limit bypass vulnerability that allows unauthenticated attackers to evade /login throttling by spoofing X-Forwarded-For or X-Real-IP headers. Attackers can send a different forwarded address per request so the limiter keyed on rewritten RemoteAddr never triggers, enabling unlimited password guessing and credential stuffing.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-348 CWE-348

References

Other References

https://blog.ostorlab.co/gophish-0121-manual-review-agentic-deep-scan.html https://github.com/gophish/gophish https://github.com/gophish/gophish/blob/b1648f0759c6d57ac989157c55d8b47c40254fe6/controllers/route.go#L168 https://github.com/gophish/gophish/blob/b1648f0759c6d57ac989157c55d8b47c40254fe6/middleware/ratelimit/ratelimit.go#L132-L136 https://www.vulncheck.com/advisories/gophish-through-0.12.1-login-rate-limit-bypass-via-x-forwarded-for-spoofing

Frequently Asked Questions

What is CVE-2026-107271? +

Gophish through 0.12.1 contains a rate limit bypass vulnerability that allows unauthenticated attackers to evade /login throttling by spoofing X-Forwarded-For or X-Real-IP headers. Attackers can send a different forwarded address per request so the limiter keyed on rewritten RemoteAddr never triggers, enabling unlimited password guessing and credential stuffing. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-107271? +

CVE-2026-107271 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2026-107271? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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