PatchSiren cyber security CVE debrief

CVE-2026-59690 Progress Software CVE debrief

A Missing Authorization vulnerability in Progress Software LoadMaster, ECS Connection Manager, Object Scale Connection Manager, MOVEit WAF, and Multi Tenant allows an authenticated attacker with low privileges to perform privileged administrative operations via the REST API that should not be accessible to their permission level, potentially resulting in a system compromise. The vulnerability has a CVSS score of 8 and a severity of HIGH. System administrators and security teams responsible for Progress Software LoadMaster, ECS Connection Manager, Object Scale Connection Manager, MOVEit WAF, and Multi Tenant should be aware of this vulnerability and take immediate action to mitigate the risk.

Vendor: Progress Software
Product: LoadMaster
CVSS: HIGH 8
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-07-27
Original CVE updated: 2026-07-27
Advisory published: 2026-07-27
Advisory updated: 2026-07-27

Who should care

System administrators and security teams responsible for Progress Software LoadMaster, ECS Connection Manager, Object Scale Connection Manager, MOVEit WAF, and Multi Tenant should be aware of this vulnerability and take immediate action to mitigate the risk. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Technical summary

The CVE-2026-59690 vulnerability is caused by a Missing Authorization issue in multiple Progress Software products, including LoadMaster, ECS Connection Manager, Object Scale Connection Manager, MOVEit WAF, and Multi Tenant. An authenticated attacker with low privileges can exploit this vulnerability to perform privileged administrative operations via the REST API, which should not be accessible to their permission level. This could potentially lead to a system compromise. The vulnerability has a CVSS score of 8 and a severity of HIGH.

Defensive priority

High

Recommended defensive actions

Apply patches or updates provided by Progress Software to address the vulnerability
Restrict access to the REST API for users with low privileges
Monitor system logs for suspicious activity
Implement additional security controls to prevent exploitation
Review compensating controls for exposed systems while remediation is scheduled and verified
Check relevant monitoring, detection, and logs for exposed assets that need extra review
Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-07-27T13:18:22.457Z and has not been modified since then. The NVD entry is currently being reviewed. Progress Software has provided patches for the affected products. System administrators should verify the authenticity of the patches before applying them. The vulnerability is caused by a Missing Authorization issue in multiple Progress Software products, which allows an authenticated attacker with low privileges to perform privileged administrative operations via the REST API.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-27T13:18:22.457Z and has not been modified since then.