CVE-2026-102566
High
Description
CTranslate2 before 4.8.1 contains a heap-based buffer overflow in the binary model loader that fails to validate payload length against allocated buffer size. Attackers can craft malicious model files with oversized payload lengths to write past heap allocation boundaries, causing crashes or arbitrary code execution.
SeverityHigh
CVSS7.8
Exploit probability—
ProductCTranslate2
PublishedSep 29, 2026
First seenSep 29, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- OpenNMT CTranslate24.8.1 or later
Patches
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| OpenNMT CTranslate2 | v < 4.8.1 | 4.8.1 |
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