CVE-2026-31254 Details
Description
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.
A code injection vulnerability has been identified in the flash-attention project, specifically in the training script prior to commit e724e2588cbe754beb97cf7c011b5e7e34119e62. The vulnerability arises because the script registers the Python eval() function as a Hydra configuration resolver, enabling the execution of arbitrary Python code through the ${eval:...} syntax. This flaw can be exploited by providing a malicious configuration file, which would be executed as code when the training script is run with that file.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 11, 2026CISA-ADP
Assessed May 12, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.notion.so/CVE-2026-31254-35d1e139318881a19003f0d635ff00df | [email protected] |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-95 | Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| flash-attention | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 12, 2026 | CVE Modified | CISA-ADP |
| May 11, 2026 | New CVE Received | [email protected] |