CVE-2026-85975Network attack vectorHinoki check available

Data disclosure via default cleartext S3 transport

Published Oct 12, 2026 · Updated Oct 12, 2026

Cleartext S3 transport in Progress MarkLogic Server allows man-in-the-middle attackers to read transmitted data or credentials. In affected 11.x and 12.x releases, the group-level S3 protocol setting defaults to HTTP, sending traffic without transport encryption. Exploitation requires an active cleartext S3 connection and access to its network path; the disclosed consequence is interception, not server modification or service interruption.

CVSS severity7.5
High
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Cleartext S3 transport in Progress MarkLogic Server allows man-in-the-middle attackers to read transmitted data or credentials. In affected 11.x and 12.x releases, the group-level S3 protocol setting defaults to HTTP, sending traffic without transport encryption. Exploitation requires an active cleartext S3 connection and access to its network path; the disclosed consequence is interception, not server modification or service interruption.

The record

CVE
CVE-2026-85975
Published
Oct 12, 2026
Updated
Oct 12, 2026
Vendor
Progress Software Corporation
Product
MarkLogic Server
Classifications
CWE-319, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 12, 2026CVE publishedPublication date reported by the CVE source.
  2. 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.

  1. Affected versionversion=11.0.0 <11.3.7
  2. Affected versionversion=12.0.0 <12.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Progress Software Corporation · MarkLogic Serverversion=11.0.0 <11.3.7; version=12.0.0 <12.1.0

Published CVSS scores

7.5ProgressSoftwareCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

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Technologies

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