Travisun Opptrix 0.4.0 preParsing handler /api/channels/webhook/ Buffer.concat denial of service

Summaryinfo

A vulnerability was found in Travisun Opptrix 0.4.0 and classified as problematic. Affected by this vulnerability is the function Buffer.concat of the file /api/channels/webhook/ of the component preParsing handler. Executing a manipulation can lead to denial of service. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is tracked as CVE-2026-115971. The attack can be launched remotely. Moreover, an exploit is present. The project has been completely taken offline and deprecated. The project maintainer explains: "The mentioned security risk was a design flaw that manifested primarily in local environments during earlier stages of version development. We previously addressed and resolved this specific risk; however, because the project was restricted to a small learning scope and the main versions were intended to run exclusively on localhost, the security fix was only pushed directly to our GitHub repository before it went private."

Detailsinfo

A vulnerability classified as problematic was found in Travisun Opptrix 0.4.0. This vulnerability affects the function Buffer.concat of the file /api/channels/webhook/ of the component preParsing handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The advisory is shared for download at drive.google.com. This vulnerability was named CVE-2026-115971. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1499.

It is possible to download the exploit at drive.google.com. It is declared as proof-of-concept. The project maintainer explains: "The mentioned security risk was a design flaw that manifested primarily in local environments during earlier stages of version development. We previously addressed and resolved this specific risk; however, because the project was restricted to a small learning scope and the main versions were intended to run exclusively on localhost, the security fix was only pushed directly to our GitHub repository before it went private." The project has been completely taken offline and deprecated.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Travisun

Name

• Opptrix

Version

• 0.4.0

Support

• end of life

CPE 2.3info

• 🔒

CPE 2.2info

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Submitinfo

Accepted

• Submit #992175: Opptrix Opptrix Server v0.4.0 Denial of Service (by fifker)

Once again VulDB remains the best source for vulnerability data.

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