CVE-2026-85958 Progress Software Corporation CVE debrief

Who should care

Defenders responsible for Progress MarkLogic Server deployments, particularly those using 11.x and 12.x releases, should assess exposure and prioritize upgrading to affected versions.

Why it matters

The authentication validation weakness in Progress MarkLogic Server could allow an attacker to use a token that should not be accepted by the affected server, potentially resulting in unauthorized access. Defenders should prioritize verifying and upgrading to Progress MarkLogic Server versions 11.3.7 or later and 12.1.0 or later to address the authentication validation weakness.

• Potential unauthorized access to Progress MarkLogic Server instances
• Need to verify and upgrade to Progress MarkLogic Server versions 11.3.7 or later and 12.1.0 or later
• Review and update authentication configurations to ensure proper token validation

Technical summary

Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 contain an authentication validation weakness that could allow an attacker to use a token that should not be accepted by the affected server. This weakness could result in unauthorized access. Defenders should prioritize verifying and upgrading to Progress MarkLogic Server versions 11.3.7 or later and 12.1.0 or later to address the authentication validation weakness. The affected product context and defensive impact should be considered when assessing exposure.

Defensive priority

Defenders should prioritize verifying and upgrading to Progress MarkLogic Server versions 11.3.7 or later and 12.1.0 or later to address the authentication validation weakness.

Recommended defensive actions

• Verify Progress MarkLogic Server version and upgrade to 11.3.7 or later for 11.x releases or 12.1.0 or later for 12.x releases
• Review and update authentication configurations to ensure proper token validation
• Monitor for potential unauthorized access attempts
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and source item provide details on the authentication validation weakness in Progress MarkLogic Server. However, additional information on potential exploitation or impact is limited. Defenders should verify and upgrade to Progress MarkLogic Server versions 11.3.7 or later and 12.1.0 or later. The source item and CVE record provide source-provided CVE metadata and official vulnerability assessment.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.