Ibm IBM webMethods Integration Server XXE Vulnerability Disclosed
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- •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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