CVE-2026-31254

High

Published: 11 May 2026

Published

11 May 2026

Modified

12 May 2026

KEV Added

—

Patch

—

CVSS Score v3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS Score 0.0009 25.5th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-31254 is a high-severity Eval Injection (CWE-95) vulnerability in Notion (inferred from references). Its CVSS base score is 7.3 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Python (T1059.006); ranked at the 25.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-29101

Vulnerability details

The flash-attention project thru commit e724e2588cbe754beb97cf7c011b5e7e34119e62 (2025-13-04) contains a code injection vulnerability (CWE-94) in its training script. The script registers the Python eval() function as a Hydra configuration resolver under the name eval. This allows configuration files to execute arbitrary…

Python code via the ${eval:...} syntax. An attacker can exploit this by providing a malicious configuration file, leading to arbitrary code execution when the training script is run with that configuration.

CWE(s): CWE-95

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1059.006 Python Execution

Adversaries may abuse Python commands and scripts for execution.

attack.mitre.org →

T1204.002 Malicious File Execution

An adversary may rely upon a user opening a malicious file in order to gain execution.

attack.mitre.org →

Why these techniques?

Direct Python eval() injection via malicious Hydra config file enables arbitrary code execution (T1059.006) triggered by user-supplied malicious file (T1204.002).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1