High severity · published Oct 12, 2026
CVE-2026-85973
Cleartext transmission in Progress MarkLogic Server cluster join operations
7.4
CVSS
0.1%
EPSS
No
On KEV
Description
Progress MarkLogic Server 12.x releases before 12.1.0 may use cleartext transport for certain cluster-management communications. A network-positioned attacker could intercept or modify information transmitted through an affected connection.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
MarkLogic Server · Progress Software Corporation
12.0.0 before 12.1.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-85973
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85973
vendor-advisory
https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026
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