Gophish Login Rate Limit Bypass via X-Forwarded-For Spoofing
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Gophish through 0.12.1 contains a rate limit bypass that lets unauthenticated attackers evade /login throttling by spoofing the X-Forwarded-For or X-Real-IP header. The limiter is keyed on the rewritten RemoteAddr, so sending a different forwarded address with each request keeps it from triggering, which allows unlimited password guessing and credential stuffing against the login page. CWE-348 (Use of Less Trusted Source) is the weakness, and CVSS 4.0 scores it 6.9 (MEDIUM). A proof-of-concept exploit is referenced, and CISA SSVC rates exploitation as poc, automatable yes, technical impact partial.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version and the status is no_fix_listed. Until a fix is available, restrict access to the Gophish login endpoint at the network or reverse-proxy layer, and do not trust X-Forwarded-For or X-Real-IP headers from untrusted clients.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-07 Threatist record created from CVE-2026-107271
- 2026-10-07 Alias added: GHSA-hxwc-4ggw-27w5
- 2026-10-07 CISA SSVC decision points changed
- 2026-10-07 Priority changed: MEDIUM → HIGH
References
Exploit 1
More gophish vulnerabilities
- TI-2026-56734 Gophish Account Lockout and Forced Password Change Bypassable via API Key CVSS 4.0HIGH 8.6
- TI-2026-69197 Gophish API lets users take over other users' objects CVSS 4.0HIGH 7.1
- TI-2026-28778 Gophish 0.12.1 Denial of Service via Office Document Upload CVSS 4.0HIGH 7.1
- TI-2026-69190 Username enumeration via login timing discrepancy in Gophish CVSS 4.0MEDIUM 6.3
- TI-2026-69200 Gophish SSRF via POST /api/import/site CVSS 4.0MEDIUM 5.3
- TI-2026-69199 Cross-site scripting in Gophish via SMTP server error messages CVSS 4.0LOW 2.3
Sources
- CVE-2026-107271 · CVE Program
- CVE-2026-107271 · NVD
- FIRST EPSS
- GHSA-hxwc-4ggw-27w5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences