Resource Exhaustion Vulnerability in Boringproxy by Theopaid
CVE-2026-70616

7.1HIGH

Key Information:

Vendor

Boringproxy

Status
Boringproxy
Vendor
CVE Published:
5 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-70616?

Boringproxy versions up to 0.10.0 are vulnerable to a resource exhaustion issue through the GET /loading endpoint. This vulnerability allows authenticated users to send crafted requests, consuming server resources indefinitely. An absence of validation checks on the query parameter allows malicious inputs to cause the server to allocate memory and goroutines without limit. As requests are sent, the server's file descriptor limit can be reached, ultimately blocking all tunnel traffic for legitimate users and leading to a denial of service. Proper server-side reclamation and timeout mechanisms are not in place, exacerbating the impact of this vulnerability.

Affected Version(s)

boringproxy 0 <= 0.10.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-70616 - Proof of Concept

References

https://github.com/theopaid/Denial-Of-Service-Through-Unb...
technical-descriptionexploit
https://www.vulncheck.com/advisories/boringproxy-resource...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Theodosis Paidakis
.