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CVE-2026-1260 Google CVE debrief

CVE-2026-1260 is a HIGH severity vulnerability in Sentencepiece, a library developed by Google. The vulnerability allows for invalid memory access when using a vulnerable model file, which is not created in the normal training procedure. This issue was published on January 22, 2026, and modified on June 30, 2026. The CVSS score for this vulnerability is 8.5. The vulnerability is classified under CWE-119. To address this vulnerability, users should update to version 0.2.1 or later.

Vendor
Google
Product
Sentencepiece
CVSS
HIGH 8.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-01-22
Original CVE updated
2026-06-30
Advisory published
2026-01-22
Advisory updated
2026-06-30

Who should care

Organizations using Sentencepiece versions less than 0.2.1 should prioritize updating to a secure version. This vulnerability has a high CVSS score of 8.5, indicating a significant risk. Security teams and developers using Sentencepiece should review their inventory and apply the necessary updates.

Technical summary

The vulnerability in Sentencepiece arises from an invalid memory access issue when using a vulnerable model file. This model file is not generated through the standard training process. The issue was addressed in version 0.2.1 of Sentencepiece. The Common Weakness Enumeration (CWE) for this vulnerability is CWE-119, which pertains to improper restriction of operations within the bounds of a memory buffer.

Defensive priority

Given the high severity of this vulnerability, defenders should prioritize updating Sentencepiece to version 0.2.1 or later. This update will mitigate the risk of invalid memory access attacks.

Recommended defensive actions

  • Update Sentencepiece to version 0.2.1 or later
  • Review inventory of systems and applications using Sentencepiece
  • Apply security updates and patches
  • Monitor for potential exploitation attempts
  • Consider compensating controls for high-risk environments

Evidence notes

The CVE record and NVD detail provide comprehensive information about this vulnerability. The source item URL offers additional context from the NVD database. References from Red Hat and GitHub provide further details on mitigation and affected systems.

Official resources

This article is AI-assisted and based on the supplied source corpus.