Cyber Resilience

CVE-2026-1567

High

Published: 03 March 2026

Published
03 March 2026
Modified
05 March 2026
KEV Added
—
Patch
—
CVSS Score v3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
EPSS Score 0.0001 2.8th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-1567 is a high-severity Improper Restriction of XML External Entity Reference (CWE-611) vulnerability in Ibm Infosphere Information Server. Its CVSS base score is 7.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 2.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and AC-4 (Information Flow Enforcement).

Deeper analysis

CVE-2026-1567 is an XML External Entity (XXE) vulnerability, classified under CWE-611, affecting IBM InfoSphere Information Server versions 11.7.0.0 through 11.7.1.6. The flaw resides in the software's handling of XML inputs, enabling attackers to retrieve sensitive information from the server. It carries a CVSS v3.1 base score of 7.1, reflecting network accessibility, low attack complexity, and impacts on confidentiality and availability.

A low-privileged user (PR:L) can exploit this vulnerability remotely over the network (AV:N) with low complexity and no user interaction required (UI:N). Successful exploitation allows limited disclosure of sensitive information (C:L) and high disruption to availability (A:H), while integrity remains unaffected (I:N) in an unchanged scope (S:U).

IBM's security advisory at https://www.ibm.com/support/pages/node/7259630 provides details on mitigation, including available patches for the affected versions. Security practitioners should consult this reference for upgrade instructions and workarounds.

EU & UK References

Vulnerability details

IBM InfoSphere Information Server 11.7.0.0 through 11.7.1.6 An XML External Entity (XXE) vulnerability in IBM InfoSphere Information Server could allow attackers to retrieve sensitive information from the server.

CWE(s)
CWE-611

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
Why these techniques?

XXE enables remote file/data read from the server (T1005) via exploitation of a network-accessible application (T1190).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2025-12531Same product: Ibm Infosphere Information Server
CVE-2025-0162Same vendor: Ibm
CVE-2024-49352Same vendor: Ibm
CVE-2026-3603Same vendor: Ibm
CVE-2025-36247Same vendor: Ibm
CVE-2024-41771Same vendor: Ibm
CVE-2024-54171Same vendor: Ibm
CVE-2024-49781Same vendor: Ibm
CVE-2024-45652Same vendor: Ibm
CVE-2025-13616Same vendor: Ibm

Affected Assets

ibm
infosphere information server
11.7 — 11.7.1.6

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly requires validation and sanitization of XML input to block external entity declarations that enable the XXE information disclosure in InfoSphere.

AC-4 Information Flow Enforcement partial match
prevent

Enforces information flow policies that can deny external entity resolution and resulting sensitive data exfiltration over the network.

CM-6 Configuration Settings partial match
prevent

Mandates secure configuration settings for XML parsers (e.g., disabling external entities) in the affected IBM server software.

References