CVE-2026-62239
Medium · 6.6CVSS
6.6
EPSS
0.2%
Published
Jul 13, 2026
CISA due date
—
The record
FlashAttention through 2.8.3.post1, fixed in commit 0816ef1, contains a symlink attack vulnerability in the download_and_copy() function within hopper/setup.py that extracts NVIDIA toolchain archives without validating symlinks or filtering tar members. A local attacker can pre-plant a symlink in the predictable cache directory to redirect extracted binaries to an attacker-chosen location, enabling arbitrary file write with victim privileges during build time.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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