Interception and tampering via cleartext cluster transport
Published Oct 12, 2026 · Updated Oct 12, 2026
Cleartext transport in Progress MarkLogic Server allows man-in-the-middle attackers to read or alter cluster-management traffic. Affected 12.x releases before 12.1.0 transmit certain management communications without encryption; the specific affected endpoints and transport-selection logic are not publicly documented. Exploitation requires visibility into or control over an affected network connection, and the reported consequence is limited to information transmitted through that connection.
Summary
What happened
Cleartext transport in Progress MarkLogic Server allows man-in-the-middle attackers to read or alter cluster-management traffic. Affected 12.x releases before 12.1.0 transmit certain management communications without encryption; the specific affected endpoints and transport-selection logic are not publicly documented. Exploitation requires visibility into or control over an affected network connection, and the reported consequence is limited to information transmitted through that connection.
The record
- CVE
- CVE-2026-85973
- Published
- Oct 12, 2026
- Updated
- Oct 12, 2026
- Vendor
- Progress Software Corporation
- Product
- MarkLogic Server
- Classifications
- T1557
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- Oct 12, 2026CVE publishedPublication date reported by the CVE source.
- Oct 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=12.0.0 <12.1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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