CVE-2026-70615
boringproxy 0.10.0 SSH authorized_keys Injection via Tunnel Creation
HIGH 8.5EPSS 0.4%
boringproxy through 0.10.0 contains a newline injection vulnerability that allows authenticated low-privileged users with tunnel-creation permission to inject arbitrary lines into the server account's SSH authorized_keys file by supplying a percent-encoded newline character in the domain parameter of the tunnel creation endpoint. Attackers can insert an unrestricted public key entry into authorized_keys to gain persistent shell access, and subsequently read cleartext credentials from the database file including all user tokens, tunnel private keys, and TLS certificates.
- Affected
- boringproxy
- CVSS v4.0 VULNCHECK
- 8.5 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 VULNCHECK
- 9.9 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - EPSS
- 0.35% chance of exploitation in the next 30 days, 27th percentile
- Published
- 2026-08-05
- Updated
- 2026-08-06
Proof-of-concept exploits (1)
- theopaid/Remote-Code-Execution-And-Privilege-Escalation-Through-SSH-Authorized-Keys-Injec…0★ · 2026-08-01