How severe is CVE-2026-3840?

CVE-2026-3840 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-3840 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-2026-3840?

CVE-2026-3840 affects Linuxfoundation Kedro. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3840?

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-2026-3840 have an EU (EUVD) identifier?

Yes. CVE-2026-3840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36497.

When was CVE-2026-3840 published?

CVE-2026-3840 was published on 2026-06-12 and last updated on 2026-06-17.

CVE-2026-3840

CVE-2026-3840 is a high-severity vulnerability in Linuxfoundation Kedro 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-22.

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-2026-36497
Weakness: CWE-22
Affected product: Linuxfoundation Kedro
Published: 2026-06-12
Last modified: 2026-06-17

Description

A vulnerability in Kedro version 1.2.0 allows an attacker to exploit path traversal by providing a crafted version string. The `_get_versioned_path()` method in `kedro/io/core.py` directly interpolates user-supplied version strings into filesystem paths without sanitization. This enables an attacker to escape the intended versioned dataset directory and access files outside the expected path. The issue is also reachable through the CLI via the `--load-versions` parameter, as `_split_load_versions()` in `kedro/framework/cli/utils.py` does not validate the version string. This vulnerability can lead to unauthorized file reads, data poisoning, cross-project or cross-tenant data access, and broader downstream impacts in environments where Kedro is used with automation or orchestration layers.

Frequently asked questions

What is CVE-2026-3840?: A vulnerability in Kedro version 1.2.0 allows an attacker to exploit path traversal by providing a crafted version string. The `_get_versioned_path()` method in `kedro/io/core.py` directly interpolates user-supplied version strings into filesystem paths without sanitization. This enables an attacker to escape the intended versioned dataset directory and access files outside the expected path. The issue is also reachable through the CLI via the `--load-versions` parameter, as `_split_load_versions()` in `kedro/framework/cli/utils.py` does not validate the version string. This vulnerability can lead to unauthorized file reads, data poisoning, cross-project or cross-tenant data access, and broader downstream impacts in environments where Kedro is used with automation or orchestration layers.
How severe is CVE-2026-3840?: CVE-2026-3840 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-3840 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-2026-3840?: CVE-2026-3840 affects Linuxfoundation Kedro. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3840?: 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-2026-3840 have an EU (EUVD) identifier?: Yes. CVE-2026-3840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36497.
When was CVE-2026-3840 published?: CVE-2026-3840 was published on 2026-06-12 and last updated on 2026-06-17.

References

https://huntr.com/bounties/156dead0-1ad5-487f-b7f5-84e707277f76

Affected products (1)

cpe:2.3:a:linuxfoundation:kedro:1.2.0:*:*:*:*:python:*:*

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