gosub-io gosub-engine up to 0.1.0 recursion

Summaryinfo

A vulnerability marked as problematic has been reported in gosub-io gosub-engine up to 0.1.0. This impacts an unknown function. Performing a manipulation results in recursion. This vulnerability is cataloged as CVE-2026-103087. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as problematic has been found in gosub-io gosub-engine up to 0.1.0. This affects an unknown code. The manipulation with an unknown input leads to a recursion vulnerability. CWE is classifying the issue as CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. This is going to have an impact on availability. The summary by CVE is:

Uncontrolled recursion in the Gosub browser engine (gosub-engine) through 0.1.0 and main before commit 46868b3 allows a remote attacker to cause a Denial of Service (stack exhaustion and application crash) via an SVG document containing an excessive number of deeply nested elements. Because the engine does not limit the nesting depth of processed SVG nodes, rendering such a document overflows the thread stack and terminates the application. The malicious SVG can be embedded through the SRC attribute of an IMG element, and thus exploitation only requires the victim to visit an attacker-controlled web page.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-103087 since 09/30/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Applying the patch 46868b3deae44544bee2a13e756772966dde950e is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-89554). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• gosub-io

Name

• gosub-engine

Version

• 0.1.0

Website

• Product: https://github.com/gosub-io/gosub-engine/

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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