How severe is CVE-2026-27170?

CVE-2026-27170 has a CVSS 3.x base score of 7.1, 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 low, and availability none.

Is CVE-2026-27170 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27170?

CVE-2026-27170 affects Opensift. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27170?

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-2026-27170 have an EU (EUVD) identifier?

Yes. CVE-2026-27170 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7745.

When was CVE-2026-27170 published?

CVE-2026-27170 was published on 2026-02-21 and last updated on 2026-06-17.

CVE-2026-27170

CVE-2026-27170 is a high-severity vulnerability in Opensift with a CVSS 3.x base score of 7.1. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7745
Weakness: CWE-20
Affected product: Opensift
Published: 2026-02-21
Last modified: 2026-06-17

Description

OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. In versions 1.1.2-alpha and below, URL ingest allows overly permissive server-side fetch behavior and can be coerced into requesting unsafe targets. Potential access/probing of private/local network resources from the OpenSift host process when ingesting attacker-controlled URLs. This issue has been fixed in version 1.1.3-alpha. To workaround when using trusted local-only exceptions, use OPENSIFT_ALLOW_PRIVATE_URLS=true with caution.

Frequently asked questions

What is CVE-2026-27170?: OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. In versions 1.1.2-alpha and below, URL ingest allows overly permissive server-side fetch behavior and can be coerced into requesting unsafe targets. Potential access/probing of private/local network resources from the OpenSift host process when ingesting attacker-controlled URLs. This issue has been fixed in version 1.1.3-alpha. To workaround when using trusted local-only exceptions, use OPENSIFT_ALLOW_PRIVATE_URLS=true with caution.
How severe is CVE-2026-27170?: CVE-2026-27170 has a CVSS 3.x base score of 7.1, 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 low, and availability none.
Is CVE-2026-27170 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27170?: CVE-2026-27170 affects Opensift. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27170?: 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-2026-27170 have an EU (EUVD) identifier?: Yes. CVE-2026-27170 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7745.
When was CVE-2026-27170 published?: CVE-2026-27170 was published on 2026-02-21 and last updated on 2026-06-17.

References

Affected products (1)

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

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