CVE-2026-2310Network attack vector

Information disclosure and service interruption via XXE

Published Sep 10, 2026 · Updated Sep 10, 2026

XXE in IBM webMethods Integration Server 11.1 allows remote attackers to expose sensitive information or exhaust server memory via XML data. IBM has not published the affected parser or the specific external-entity resolution operation performed on attacker-controlled XML. Reachability requires an interface that processes untrusted XML; successful exploitation reads server-accessible data or interrupts service through memory exhaustion.

CVSS severityUnavailable
Unscored
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in IBM webMethods Integration Server 11.1 allows remote attackers to expose sensitive information or exhaust server memory via XML data. IBM has not published the affected parser or the specific external-entity resolution operation performed on attacker-controlled XML. Reachability requires an interface that processes untrusted XML; successful exploitation reads server-accessible data or interrupts service through memory exhaustion.

The record

CVE
CVE-2026-2310
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
IBM
Product
IBM webMethods Integration Server
Classifications
CWE-91, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 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?

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  1. Affected versionversion=11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM webMethods Integration Serverversion=11.1

Published CVSS scores

No CVSS assessment is available in this record.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-91XML Injection (aka Blind XPath Injection)
T1499.004Application or System Exploitation

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

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Your stack

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