CVE-2026-31226CRITICAL 9.8EPSS p63.0%
CVE-2026-31226CVE-2026-31226
Description
The TinyZero project thru commit 6652a63c57fa7e5ccde3fc9c598c7176ff15b839 (2025-58-24) contains a critical command injection vulnerability (CWE-78) in its HDFS file operation utilities. The vulnerability arises from the unsafe construction and execution of shell commands via os.system() without proper input sanitization or escaping. User-controlled input (such as file paths) is directly interpolated into shell command strings using f-strings within the _copy() function. An attacker can inject arbitrary OS commands by supplying a specially crafted path parameter through the Hydra configuration framework. This leads to remote code execution with the privileges of the user running the TinyZero training process.
Scoring
| CVSS 3.1 | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 1.16% probability of exploitation · percentile 63.0% · 2026-06-18T12:00:27Z |
| Published | 2026-05-12 |
| Last modified | 2026-05-19 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')cwe-78 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.