CVE-2026-1260
High
Description
Invalid memory access in Sentencepiece versions less than 0.2.1 when using a vulnerable model file, which is not created in the normal training procedure.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Google Sentencepiece
PublishedJan 22, 2026
First seenJan 22, 2026
Weakness typeCWE-119Memory buffer bounds error
How to fix
Update
- google sentencepiece0.2.1 or later
- sentencepiece0.2.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| google sentencepiece | v < 0.2.1 | 0.2.1 |
| sentencepiecePyPI | v < 0.2.1 | 0.2.1 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
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