CVE-2026-19646

Multiple vulnerabilities affect IBM License Key Server Administration and Reporting Tool and IBM LKS Administration Agent

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Published Sep 10, 2026 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Description

IBM Common Licensing Agent 9.0, Agent 9.0.0.1, Agent 9.0.0.2, ART 9.0, ART 9.0.0.1, and ART 9.0.0.2 could allow a remote attacker to redirect users to an arbitrary domain due to improper validation of the HTTP Host header.

Analysis

Technical impact

The vulnerability arises from improper validation of the HTTP Host header, allowing a remote attacker to redirect users to an arbitrary domain. This can enable phishing or defacement by making clients believe they are interacting with a trusted site, although the description does not confirm such misuse beyond the redirection capability.

Affected Systems

IBM Common Licensing Agent versions 9.0, 9.0.0.1, and 9.0.0.2, as well as the ART components 9.0, 9.0.0.1, and 9.0.0.2, are affected. These components are part of the IBM Common Licensing suite used for license management and reporting.

Risk and Exploitability

The CVSS base score of 9.1 indicates a high severity. The EPSS score is not available, so precise exploitation probability cannot be quantified. The vulnerability is not listed in the CISA KEV catalog. The flaw can be exploited remotely over the network; an attacker only needs to send an HTTP request with a crafted Host header to the service. The ability to redirect users to arbitrary domains may facilitate phishing or defacement attacks.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

IBM

Common Licensing

affected

Version	Status	Constraints
`Agent 9.0`	affected	—
`Agent 9.0.0.1`	affected	—
`Agent 9.0.0.2`	affected	—
`ART 9.0`	affected	—
`ART 9.0.0.1`	affected	—
`ART 9.0.0.2`	affected	—

No data.

Vendor Product Versions

Ibm

Common Licensing

Version	Status	Scheme	Platform
`Agent 9.0`	affected	generic	—
`Agent 9.0.0.1`	affected	generic	—
`Agent 9.0.0.2`	affected	generic	—
`ART 9.0`	affected	generic	—
`ART 9.0.0.1`	affected	generic	—
`ART 9.0.0.2`	affected	generic	—

Remediation

Vendor Solution

Download and install IBM Common Licensing 9.1 from Passport Advantage https://www.ibm.com/software/passportadvantage/pao-customer Users are strongly advised to update to the latest version (IBM Common Licensing 9.1) to mitigate any potential risks associated with these vulnerabilities.

OpenCVE Recommended Actions

Download and install IBM Common Licensing 9.1 from Passport Advantage.
Apply the update to all affected Agent and ART installations.
If an immediate update is not feasible, restrict traffic to known legitimate host headers using network filtering or firewall rules to mitigate the redirection risk.

Generated by OpenCVE AI on September 11, 2026 at 03:55 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.520% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact total

References

Link	Providers
https://www.ibm.com/support/pages/node/7286490

History

Sep 12, 2026 12:15 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Sep 10, 2026 10:15 PM Description updated. Title updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		IBM Common Licensing Agent 9.0, Agent 9.0.0.1, Agent 9.0.0.2, ART 9.0, ART 9.0.0.1, and ART 9.0.0.2 could allow a remote attacker to redirect users to an arbitrary domain due to improper validation of the HTTP Host header.
Title		Multiple vulnerabilities affect IBM License Key Server Administration and Reporting Tool and IBM LKS Administration Agent
First Time appeared		Ibm Ibm common Licensing
Weaknesses		CWE-1149
CPEs		cpe:2.3:a:ibm:common_licensing:agent:::::::* cpe:2.3:a:ibm:common_licensing:art:::::::*
Vendors & Products		Ibm Ibm common Licensing
References		https://www.ibm.com/support/pages/node/7286490
Metrics		cvssV3_1 `{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}`