Denial of Service Vulnerability in Travisun Opptrix Webhook Component
CVE-2026-115971

6.9MEDIUM

Key Information:

Vendor

Travisun

Status
Opptrix
Vendor
CVE Published:
24 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-115971?

A design flaw was discovered in the Buffer.concat function of the webhook preParsing handler in Travisun Opptrix version 0.4.0, allowing attackers to perform remote denial of service attacks. This vulnerability arose primarily during earlier development stages and has been publicly disclosed. The project is now deprecated and completely taken offline, as the maintainer indicated that this security issue was addressed only in limited local environments. Given that the project is no longer supported, all users should be aware of the risks associated with continued use.

Affected Version(s)

Opptrix 0.4.0

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-2026-115971 - Proof of Concept

References

https://vuldb.com/vuln/426052
vdb-entrytechnical-description
https://vuldb.com/vuln/426052/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-115971
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
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

fifker (VulDB User)
VulDB CNA Team
.