IBM WebSphere Application Server Liberty up to 26.0.0.3 server-side request forgery

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.6$5k-$25k0.00

Summaryinfo

A vulnerability marked as critical has been reported in IBM WebSphere Application Server Liberty up to 26.0.0.3. This impacts an unknown function. The manipulation leads to server-side request forgery. This vulnerability is listed as CVE-2026-1561. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in IBM WebSphere Application Server Liberty up to 26.0.0.3. It has been rated as critical. This issue affects an unknown code. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.3 IBM WebSphere Application Server Liberty is vulnerable to server-side request forgery (SSRF). This may allow remote attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.

It is possible to read the advisory at ibm.com. The identification of this vulnerability is CVE-2026-1561 since 01/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/28/2026).

The vulnerability scanner Nessus provides a plugin with the ID 313186 (IBM MQ 9.1 < 9.1.0.36 LTS / 9.2 < 9.2.0.42 LTS / 9.3 < 9.3.0.40 LTS / 9.3 < 9.4.5.1 CD / 9.4 < 9.4.0.21 LTS / 9.4.5.1 (7271941)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (313186) and CERT Bund (WID-SEC-2026-1687). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • IBM License Metric Tool

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔒

CNA Base Score: 5.4
CNA Vector (ibm): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 313186
Nessus Name: IBM MQ 9.1 < 9.1.0.36 LTS / 9.2 < 9.2.0.42 LTS / 9.3 < 9.3.0.40 LTS / 9.3 < 9.4.5.1 CD / 9.4 < 9.4.0.21 LTS / 9.4.5.1 (7271941)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/28/2026 CVE reserved
03/25/2026 +56 days Advisory disclosed
03/25/2026 +0 days VulDB entry created
05/28/2026 +63 days VulDB entry last update

Sourcesinfo

Vendor: ibm.com

Advisory: ibm.com
Status: Confirmed

CVE: CVE-2026-1561 (🔒)
GCVE (CVE): GCVE-0-2026-1561
GCVE (VulDB): GCVE-100-353483
CERT Bund: WID-SEC-2026-1687 - IBM License Metric Tool: Mehrere Schwachstellen erm&ouml;glichen nicht spezifizierten Angriff

Entryinfo

Created: 03/25/2026 22:57
Updated: 05/28/2026 01:57
Changes: 03/25/2026 22:57 (63), 04/01/2026 16:25 (12), 05/08/2026 11:59 (2), 05/28/2026 01:57 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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