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Vulnerability record · CVE-2026-27189 · published 21 February 2026

CVE-2026-27189: Opensift race condition vulnerability

OOpensift · Opensift

OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. Versions 1.1.2-alpha and below, use non-atomic and insufficiently synchronized local JSON persistence flows, potentially causing concurrent operations to lose updates or corrupt local state across sessions/study/quiz/flashcard/wellness/auth stores. This issue has been fixed in version 1.1.3-alpha.

5.8 CVSS 3.1 Medium EPSS 0.13% · top 97.9% CWE-362 · Race conditionCWE-367 · TOCTOU race condition
5.8CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. Versions 1.1.2-alpha and below, use non-atomic and insufficiently synchronized local JSON persistence flows, potentially causing concurrent operations to lose updates or corrupt local state across sessions/study/quiz/flashcard/wellness/auth stores. This issue has been fixed in version 1.1.3-alpha.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/OpenSift/OpenSift/releases/tag/v1.1.3-alpha ProductRelease Notes
https://github.com/OpenSift/OpenSift/security/advisories/GHSA-3pmp-j953-whxq Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-27189), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.