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IBM webMethods Integration Server XXE Vulnerability Disclosed

IBM webMethods Integration Server XXE Vulnerability Disclosed

First seen 11 Sep 2026, 15:49 UTC • •
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ThreatCluster AI
ThreatCluster •September 11, 2026 at 21:12 UTC
  • •IBM webMethods Integration Server 11.1 is vulnerable to XXE attacks (CVE-2026-2310).
  • •Exploitation could lead to exposure of sensitive data and resource exhaustion.
  • •Immediate remediation is recommended through core fixes or disabling external entity resolution.

IBM webMethods Integration Server 11.1 is vulnerable to an XML external entity injection (XXE) attack, identified as CVE-2026-2310. This vulnerability allows remote attackers to expose sensitive information or exhaust memory resources. The attack requires local access and low-level privileges, with no victim interaction needed, making exploitation relatively easy. The vulnerability is particularly concerning for internet-adjacent or multi-tenant servers processing untrusted XML. IBM has recommended immediate remediation through core fixes or workarounds. The CVSS base score for this vulnerability is 7.8, indicating a high severity. The vulnerability was published on September 10, 2026, and is currently not listed as being actively exploited in the wild.

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Timeline

2026-09-10
CVE-2026-2310 published
IBM disclosed an XXE vulnerability in webMethods Integration Server 11.1, affecting XML data processing.
IBM
2026-09-11
Vulnerability alert issued
Redpacketsecurity highlighted the severity and recommended urgent remediation for the XXE vulnerability.
Redpacketsecurity

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