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TI-2026-29566 Aliases CVE-2026-40910GHSA-pq96-pwvg-vrr9

frp: Authentication bypass in frp HTTP vhost routing when routeByHTTPUser is used for access control

Priority HIGH 72CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

frp is a fast reverse proxy. From 0.43.0 to 0.68.0, frp contains an authentication bypass in the HTTP vhost routing path when routeByHTTPUser is used as part of access control. In proxy-style requests, the routing logic uses the username from Proxy-Authorization to select the routeByHTTPUser backend, while the access control check uses credentials from the regular Authorization header. As a result, an attacker who can reach the HTTP vhost entrypoint and knows or can guess the protected routeByHTTPUser value may access a backend protected by httpUser / httpPassword even with an incorrect Proxy-Authorization password. This issue affects deployments that explicitly use routeByHTTPUser. It does not affect ordinary HTTP proxies that do not use this feature. This vulnerability is fixed in 0.68.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00269 19th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed frp (fatedier): 0.68.1github.com/fatedier/frp (Go): 0.68.1

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

VendorProductAffected versionsFixed inStatusSource
fatedierfrpbefore 0.68.10.68.1Patch availableCNA
—github.com/fatedier/frp (Go)0.43.0 to before 0.68.10.68.1Patch availableGHSA-pq96-pwvg-vrr9
  • frp Vendorfatedier Affected before 0.68.1 Fixed in 0.68.1 Patch available CNA
  • github.com/fatedier/frp (Go) Vendor— Affected 0.43.0 to before 0.68.1 Fixed in 0.68.1 Patch available GHSA-pq96-pwvg-vrr9

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fatedier:frp:*:*:*:*:*:*:*:*0.43.0 to before 0.68.1Vulnerablefatedier
  • cpe:2.3:a:fatedier:frp:*:*:*:*:*:*:*:* Versions 0.43.0 to before 0.68.1 Vulnerable ·fatedier

Remediation

  • Fix · CNA frp (fatedier) Fixed in 0.68.1
  • Fix · GHSA-pq96-pwvg-vrr9 github.com/fatedier/frp (Go) Fixed in 0.68.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-40910
  2. 2026-10-03 Alias added: GHSA-pq96-pwvg-vrr9

References

Exploit 1

Advisory 1

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences