Open OnDemand Shell App closed websocket DoS
Priority LOW 24CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
Open OnDemand is an open-source HPC portal. Users can flood logs by interacting with the shell app and generating many errors. Users who flood logs can create very large log files causing a Denial of Service (DoS) to the ondemand system. This vulnerability is fixed in 3.1.14 and 4.0.6.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00336 27th percentileScored 2026-11-07
Fix Fixed ondemand (OSC): 3.1.14, 4.0.6
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA ondemand (OSC) Fixed in 3.1.14, 4.0.6
Timeline
- 2026-10-02 Threatist record created from CVE-2025-53636
References
More OSC vulnerabilities
- TI-2020-18567 Open OnDemand before 1.5.7 and 1.6.x before 1.6.22 allows CSRF. CVSS 3.1HIGH 8.8
- TI-2025-39628 Open OnDemand RPM packages create world writable locations CVSS 4.0MEDIUM 6.9
- TI-2025-40555 Open OnDemand affected by Apache proxy passing sensitive headers CVSS 3.1HIGH 7.6
- TI-2026-21016 OnDemand susceptible to malicious input when navigating to a directory. CVSS 4.0MEDIUM 6.3
- TI-2026-32328 Open OnDemand: Specially crafted filenames can execute javascript in the file browser CVSS 4.0MEDIUM 5.3
- TI-2025-36194 Open OnDemand didn't rotate password for VNC batch_connect CVSS 4.0MEDIUM 4.1
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences