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TI-2025-35181 Aliases CVE-2025-55796

The openml/openml.org web application version v2.0.20241110 uses predictable MD5-based…

Priority HIGH 66CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-400.

Summary

The openml/openml.org web application version v2.0.20241110 uses predictable MD5-based tokens for critical user workflows such as signup confirmation, password resets, email confirmation resends, and email change confirmation. These tokens are generated by hashing the current timestamp formatted as "%d %H:%M:%S" without incorporating any user-specific data or cryptographic randomness. This predictability allows remote attackers to brute-force valid tokens within a small time window, enabling unauthorized account confirmation, password resets, and email change approvals, potentially leading to account takeover.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00634 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openml:openml_frontend:*:*:*:*:*:*:*:*before 2.0.20251111VulnerableOpenml
  • cpe:2.3:a:openml:openml_frontend:*:*:*:*:*:*:*:* Versions before 2.0.20251111 Vulnerable ·Openml

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-55796
  2. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Exploit 1

Other 2

  • TI-2025-35180 The openml/openml.org web application version v2.0.20241110 uses incremental user IDs and… CVSS 3.1LOW 3.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences