Infinite loop Affecting openmcdf package, versions [,3.1.3)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DOTNET-OPENMCDF-16416972
- published4 May 2026
- disclosed22 Apr 2026
- creditUnknown
Introduced: 22 Apr 2026
CVE-2026-41511 (opens in a new tab)How to fix?
Upgrade OpenMcdf to version 3.1.3 or higher.
Overview
OpenMcdf is a fully .NET / C# library to manipulate Compound File Binary File Format files, also known as Structured Storage.
Affected versions of this package are vulnerable to Infinite loop through the MoveNext traversal logic in the directory tree enumeration code. An attacker can trigger an infinite or unbounded directory walk by supplying a Compound File Binary document with a cycle in the LeftSiblingID / RightSiblingID chain, causing the enumerator to loop until the process hangs or exhausts resources.