CVE-2026-22235: OPEXUS eComplaint IDOR

Severity: high (CVSS 7.5 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 eComplaint before version 9.0.45.0 allows an attacker to visit the the 'DocumentOpen.aspx' endpoint, iterate through predictable values of 'chargeNumber', and download any uploaded files.

Affected products

OPEXUS eComplaint: before 9.0.45.0 — fixed in 9.0.45.0

How to fix

Upgrade to a fixed version: OPEXUS eComplaint 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-2026-22235

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