CVE-2026-85891 HIGH

CVE-2026-85891: Azure HDInsight Information Disclosure Vulnerability

Vendor Microsoft

Product Azure HDInsight

Weakness CWE-200 · Info exposure

Published October 13, 2026

Last update October 22, 2026

View on NVD All CVEs

CVSS base score

7.5/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

What the vulnerability does

01Description

Exposure of sensitive information to an unauthorized actor in Azure HDInsight allows an unauthorized attacker to disclose information over a network.

Key dates

02Disclosure timeline

October 13, 2026 CVE published

October 22, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-85891 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/200.html AskarLabs — CWE-200 write-up Exposure of Sensitive Information to an Unauthorized Actor

Related vulnerabilities

04Related CVE

CVE-2025-13973 StickEasy Protected Contact Form <= 1.0.1 - Unauthenticated Information Disclosure CVE-2026-47247 libheif Vulnerable to Heap Information Disclosure via Grid Image Gap + Uninitialized Pixel Plane Allocation CVE-2026-4409 Subscribe To Comments Reloaded <= 240119 - Improper Authorization to Unauthenticated Arbitrary Subscription Management CVE-2026-7542 Slider Revolution <= 7.0.10 - Authenticated (Subscriber+) Sensitive Information Disclosure CVE-2026-7544 Mux Video Uploader <= 1.1.4 - Authenticated (Subscriber+) Information Exposure