CVE-2026-41511

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Source
https://cve.org/CVERecord?id=CVE-2026-41511
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41511.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-41511
Aliases
Published
2026-05-08T18:52:39.438Z
Modified
2026-07-15T01:48:58.711280842Z
Severity
  • 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
OpenMcdf has an Infinite loop DoS via crafted CFB directory cycle
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-835"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41511.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/openmcdf/openmcdf

Affected ranges

Type
GIT
Repo
https://github.com/openmcdf/openmcdf
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
fd0775c58134848a587424c4a9d6c2403f628e19
Fixed
24f445a557fc4f46461cf6d02d296cce16c293a0
Database specific 
{
    "cpe": "cpe:2.3:a:openmcdf:openmcdf:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.1.3"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v2.*
v2.1.1.29598
v2.1.2.1274
v2.1.3.34720
v2.1.3.34730
v2.1.4.23498
v2.1.5.22659
v2.1.6.28924
v2.2.1.2
v2.2.1.3
v2.2.1.4
v2.2.1.5
v2.2.1.6
v2.2.1.9
v2.3.0.0
v2.3.1.0
v3.*
v3.0.0
v3.0.0-preview.1
v3.0.0-preview.2
v3.0.0-preview.3
v3.0.0-preview.4
v3.0.0-preview.5
v3.0.1
v3.0.2
v3.0.2-alpha.1
v3.0.3
v3.1.0
v3.1.1
v3.1.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41511.json"