Arbitrary Code Injection Affecting flash-attn package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Jun 2026
- disclosed11 May 2026
- creditUnknown
Introduced: 11 May 2026
CVE-2026-31253 (opens in a new tab)How to fix?
There is no fixed version for flash-attn.
Overview
flash-attn is a Flash Attention: Fast and Memory-Efficient Exact Attention
Affected versions of this package are vulnerable to Arbitrary Code Injection via the load_checkpoint function and checkpoint loading process. An attacker can achieve arbitrary code execution by supplying a maliciously crafted checkpoint file that is deserialized when loaded during model warmstarting or evaluation.