TOCTOU Vulnerability in Open OnDemand HPC Portal by OSC
CVE-2025-62724

4.3MEDIUM

Key Information:

Vendor

Osc

Status
Ondemand
Vendor
CVE Published:
20 November 2025

What is CVE-2025-62724?

The vulnerability in Open OnDemand allows for TOCTOU attacks, permitting unauthorized access to files outside defined allowlists during zip file downloads. While UNIX permissions provide a level of protection, sites utilizing file browser allowlists may be at risk, particularly in versions preceding 4.0.8 and 3.1.16, which have received patches to address this issue. Users should update their systems to secure against potential exploits.

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Deploy the Patch

Affected Version(s)

ondemand < 4.0.8 < 4.0.8

ondemand < 3.1.16 < 3.1.16

References

https://github.com/OSC/ondemand/security/advisories/GHSA-...
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CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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