CVE-2026-41511

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.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/openmcdf/openmcdf/commit/24f445a557fc4f46461cf6d02d296cce16c293a0	Patch
https://github.com/openmcdf/openmcdf/releases/tag/v3.1.3	Release Notes
https://github.com/openmcdf/openmcdf/security/advisories/GHSA-jxpf-xq2m-q525	Exploit Vendor Advisory
https://github.com/openmcdf/openmcdf/security/advisories/GHSA-jxpf-xq2m-q525	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:openmcdf:openmcdf:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-08 19:16

Updated : 2026-06-17 10:46

NVD link : CVE-2026-41511

Mitre link : CVE-2026-41511

CVE.ORG link : CVE-2026-41511

JSON object : View

Products Affected

openmcdf

openmcdf

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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