CVE-2026-1260: Sentencepiece has a a heap overflow issue

January 22, 2026

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.

References

github.com/advisories/GHSA-38vq-g6vr-w8wf
github.com/google/sentencepiece
github.com/google/sentencepiece/commit/d856b67fdb3492e035489abf9b3aaf486144b2c0
github.com/google/sentencepiece/releases/tag/v0.2.1
nvd.nist.gov/vuln/detail/CVE-2026-1260

Code Behaviors & Features

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