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CVE PROGRAM SOURCE RECORD4.3 Medium

CVE-2025-62724

Open OnDemand allowlist bypass using symlinks in directory downloads (TOCTOU)

Description

Open OnDemand is an open-source HPC portal. Prior to versions 4.0.8 and 3.1.16, users can craft a "Time of Check to Time of Use" (TOCTOU) attack when downloading zip files to access files outside of the OOD_ALLOWLIST. This vulnerability impacts sites that use the file browser allowlists in all current versions of OOD. However, files accessed are still protected by the UNIX permissions. Open OnDemand versions 4.0.8 and 3.1.16 have been patched for this vulnerability.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

OSC ondemand

  • < 4.0.8affected
  • < 3.1.16affected

References