CVE-2026-22234: OPEXUS eCasePortal unauthenticated IDOR

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-01-08 · updated 2026-06-17
Weakness: CWE-639

Description

OPEXUS eCasePortal before version 9.0.45.0 allows an unauthenticated attacker to navigate to the 'Attachments.aspx' endpoint, iterate through predictable values of 'formid', and download or delete all user-uploaded files, or upload new files.

Affected products

OPEXUS eCase Portal: before 9.0.45.0 — fixed in 9.0.45.0

How to fix

Upgrade to a fixed version: OPEXUS eCase Portal 9.0.45.0. Check the vendor advisory for mitigations.

References

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-008-02.json
https://www.cve.org/CVERecord?id=CVE-2026-22234

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