Missing authentication exposes pprof debug endpoints in frp
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
frp from 0.41.0 through 0.71.1 lets unauthenticated remote attackers reach pprof debug endpoints without credentials. The handlers are registered on the root mux outside Basic Authentication, which is a missing authentication flaw (CWE-306). An attacker can query /debug/pprof/ on the frps dashboard or frpc admin listeners to obtain cmdline, goroutine stacks and heap profiles, and can trigger CPU profiling.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
frp 0.41.0 through 0.71.1 contains a missing authentication vulnerability that allows unauthenticated remote attackers to access pprof debug endpoints because handlers are registered on the root mux outside Basic Authentication. Attackers can query /debug/pprof/ endpoints on frps dashboard or frpc admin listeners to obtain cmdline, goroutine stacks, heap profiles, and trigger CPU profiling.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- 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 for frp.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-14 Threatist record created from CVE-2026-110619
- 2026-10-14 Alias added: GHSA-8584-2qgx-4xpf
- 2026-10-15 CISA SSVC decision points changed
References
More fatedier vulnerabilities
- TI-2026-51654 frp: Unauthenticated Remote Denial of Service in the frp SSH Tunnel Gateway via Integer Overflow CVSS 4.0HIGH 8.7
- TI-2026-29566 frp: Authentication bypass in frp HTTP vhost routing when routeByHTTPUser is used for access control CVSS 3.1CRITICAL 9.1
Sources
- CVE-2026-110619 · CVE Program
- CVE-2026-110619 · NVD
- FIRST EPSS
- GHSA-8584-2qgx-4xpf · GitHub Advisory Database · CC BY 4.0
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