How severe is CVE-2026-28676?

CVE-2026-28676 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-28676 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28676?

CVE-2026-28676 affects Opensift. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28676?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-28676 have an EU (EUVD) identifier?

Yes. CVE-2026-28676 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9987.

When was CVE-2026-28676 published?

CVE-2026-28676 was published on 2026-03-06 and last updated on 2026-06-17.

CVE-2026-28676

CVE-2026-28676 is a high-severity vulnerability in Opensift with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9987
Weakness: CWE-22
Affected product: Opensift
Published: 2026-03-06
Last modified: 2026-06-17

Description

OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. Prior to version 1.6.3-alpha, multiple storage helpers used path construction patterns that did not uniformly enforce base-directory containment. This created path-injection risk in file read/write/delete flows if malicious path-like values were introduced. This issue has been patched in version 1.6.3-alpha.

Frequently asked questions

What is CVE-2026-28676?: OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. Prior to version 1.6.3-alpha, multiple storage helpers used path construction patterns that did not uniformly enforce base-directory containment. This created path-injection risk in file read/write/delete flows if malicious path-like values were introduced. This issue has been patched in version 1.6.3-alpha.
How severe is CVE-2026-28676?: CVE-2026-28676 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-28676 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28676?: CVE-2026-28676 affects Opensift. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28676?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-28676 have an EU (EUVD) identifier?: Yes. CVE-2026-28676 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9987.
When was CVE-2026-28676 published?: CVE-2026-28676 was published on 2026-03-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opensift:opensift:*:*:*:*:*:python:*:*

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