How severe is CVE-2026-40867?

CVE-2026-40867 has a CVSS 4.0 base score of 7.1, rated high severity.

Is CVE-2026-40867 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-40867?

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-2026-40867 have an EU (EUVD) identifier?

Yes. CVE-2026-40867 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24235.

When was CVE-2026-40867 published?

CVE-2026-40867 was published on 2026-04-21 and last updated on 2026-06-17.

CVE-2026-40867

CVE-2026-40867 is a high-severity vulnerability with a CVSS 4.0 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-284.

Key facts

Severity: High (CVSS 4.0 base score 7.1)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24235
Weakness: CWE-284
Published: 2026-04-21
Last modified: 2026-06-17

Description

Horilla is a free and open source Human Resource Management System (HRMS). In 1.5.0, a broken access control vulnerability in the helpdesk attachment viewer allows any authenticated user to view attachments from other tickets by changing the attachment ID. This can expose sensitive support files and internal documents across unrelated users or teams.

Frequently asked questions

What is CVE-2026-40867?: Horilla is a free and open source Human Resource Management System (HRMS). In 1.5.0, a broken access control vulnerability in the helpdesk attachment viewer allows any authenticated user to view attachments from other tickets by changing the attachment ID. This can expose sensitive support files and internal documents across unrelated users or teams.
How severe is CVE-2026-40867?: CVE-2026-40867 has a CVSS 4.0 base score of 7.1, rated high severity.
Is CVE-2026-40867 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-40867?: 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-2026-40867 have an EU (EUVD) identifier?: Yes. CVE-2026-40867 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24235.
When was CVE-2026-40867 published?: CVE-2026-40867 was published on 2026-04-21 and last updated on 2026-06-17.

References

https://github.com/horilla/horilla-hr/security/advisories/GHSA-j6qp-j853-qrff

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