CVE-2026-21959Network attack vector

Critical-data disclosure to high-privileged remote users

Published Jan 20, 2026 · Updated Jan 20, 2026

Improper access control in Oracle Workflow 12.2.3 through 12.2.15 allows remote authenticated users to read critical data over HTTP. The flaw is in the Workflow Loader component, but Oracle has not published the access-control operation that mishandles a request. A high-privilege account and network access to the HTTP service are required, and impact is limited to unauthorized reading of Oracle Workflow-accessible data.

CVSS severity4.9
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Oracle Workflow 12.2.3 through 12.2.15 allows remote authenticated users to read critical data over HTTP. The flaw is in the Workflow Loader component, but Oracle has not published the access-control operation that mishandles a request. A high-privilege account and network access to the HTTP service are required, and impact is limited to unauthorized reading of Oracle Workflow-accessible data.

The record

CVE
CVE-2026-21959
Published
Jan 20, 2026
Updated
Jan 20, 2026
Vendor
Oracle
Product
Oracle Workflow
Classifications
CWE-284
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 20, 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=12.2.3 <=12.2.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle · Oracle Workflowversion=12.2.3 <=12.2.15

Published CVSS scores

4.9OracleCVSS:3.1/AV:N/AC:L/PR:H/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control

Public exploit references

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Technologies

Your stack

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Your stack

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