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NVD Vulnerability Details :

CVE-2026-41511

Awaiting Analysis

Source-security-advisories@github.com

Published At-08 May, 2026 | 19:16

Updated At-13 May, 2026 | 17:26

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	6.2	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Type: Secondary

Version: 3.1

Base score: 6.2

Base severity: MEDIUM

Vector:

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE ID	Type	Source
CWE-835	Secondary	security-advisories@github.com

CWE ID: CWE-835

Type: Secondary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/openmcdf/openmcdf/commit/24f445a557fc4f46461cf6d02d296cce16c293a0	security-advisories@github.com	N/A
https://github.com/openmcdf/openmcdf/releases/tag/v3.1.3	security-advisories@github.com	N/A
https://github.com/openmcdf/openmcdf/security/advisories/GHSA-jxpf-xq2m-q525	security-advisories@github.com	N/A
https://github.com/openmcdf/openmcdf/security/advisories/GHSA-jxpf-xq2m-q525	134c704f-9b21-4f2e-91b3-4a467353bcc0	N/A