CVE-2026-93852Network attack vector

Cross-project lease disclosure via unscoped listing

Published Sep 18, 2026 · Updated Sep 18, 2026

Missing authorization in OpenStack Blazar 1.0.0 through 15.1.0, 16.0.0, and 17.0.0 allows remote authenticated users to read lease data. The GET /v2/leases handler returns records for every project because it applies neither project scoping nor an administrator-only policy. The flaw requires authenticated REST API access and an enabled V2 lease API; exposed identifiers also unlock cross-project modification or deletion through the companion authorization flaw.

CVSS severity7.1
High
EPSS probability0.37%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Missing authorization in OpenStack Blazar 1.0.0 through 15.1.0, 16.0.0, and 17.0.0 allows remote authenticated users to read lease data. The GET /v2/leases handler returns records for every project because it applies neither project scoping nor an administrator-only policy. The flaw requires authenticated REST API access and an enabled V2 lease API; exposed identifiers also unlock cross-project modification or deletion through the companion authorization flaw.

The record

CVE
CVE-2026-93852
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
OpenStack
Product
Blazar
Classifications
CWE-862, T1580
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <15.1.1
  2. Affected versionversion=16.0.0 <16.0.1
  3. Affected versionversion=17.0.0 <17.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenStack · Blazarversion=1.0.0 <15.1.1; version=16.0.0 <16.0.1; version=17.0.0 <17.0.1

Published CVSS scores

7.1MITRECVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1580Cloud Infrastructure Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started