HOMEVULNERABILITIESCVE-2026-27189
MEDIUM

CVE-2026-27189

CWE-362Published: February 21, 2026· Updated: Feb 23, 2026

5.8
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:1.4th

Official 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.

NVD Source

Technical Analysis

CVE-2026-27189 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 5.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityHigh
AvailabilityLow
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L

Affected Vendors & Products

opensift1 product
opensift
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/OpenSift/OpenSift/security/advisories/GHSA-3pmp-j953-whxq

All References (2)

→
https://github.com/OpenSift/OpenSift/releases/tag/v1.1.3-alphaProduct · Release Notes
→
https://github.com/OpenSift/OpenSift/security/advisories/GHSA-3pmp-j953-whxqVendor Advisory

Quick Facts

CVE IDCVE-2026-27189
CVSS Score5.8 / 10
SeverityMEDIUM
WeaknessCWE-362
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedFeb 21, 2026

Related CVEs (CWE-362)

CVE-2026-5902
9.8
CVE-2025-13036
9.2
CVE-2025-10263
9.1
CVE-2026-20677
9.0
CVE-2025-32991
9.0
CVE-2026-44693
8.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-27189 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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