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OpenMcdf has an Infinite loop DoS via crafted CFB directory cycle

🗓️ 22 Apr 2026 22:09:01Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 13 Views

OpenMcdf can loop on crafted CFB directory cycles, causing DoS during enumeration and stream access.

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13 May 2026 13:33Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.5 - 6.2
EPSS0.00013
SSVC
13