CVE-2026-41511
6.2 MEDIUMOpenMcdf is a fully .NET / C# library to manipulate Compound File Binary File Format files, also known as Structured Storage
Published: 2026-05-08 · Last updated: 2026-06-05
Severity and scoring
- CVSS
- 6.2 MEDIUM
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-835
Affected products
| Vendor | Product |
|---|---|
| openmcdf | openmcdf |
Description
OpenMcdf is a fully .NET / C# library to manipulate Compound File Binary File Format files, also known as Structured Storage. Prior to version 3.1.3, OpenMcdf does not detect cycles in the directory entry red-black tree of a Compound File Binary (CFB) document. A crafted CFB file with a cycle in the LeftSiblingID / RightSiblingID chain causes Storage.EnumerateEntries() and Storage.OpenStream() to loop indefinitely, consuming the calling thread with no possibility of recovery via try/catch. This issue has been patched in version 3.1.3.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-41511
- [Patch]https://github.com/openmcdf/openmcdf/commit/24f445a557fc4f46461cf6d02d296cce16c293a0
- [Other]https://github.com/openmcdf/openmcdf/releases/tag/v3.1.3
- [Vendor advisory]https://github.com/openmcdf/openmcdf/security/advisories/GHSA-jxpf-xq2m-q525
- [Vendor advisory]https://github.com/openmcdf/openmcdf/security/advisories/GHSA-jxpf-xq2m-q525
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