CVE-2018-1421 XML external entity in DataPower Gateways

What is CVE-2018-1421?

CVE-2018-1421 is a high-severity vulnerability in Ibm Datapower Gateway, published on 4 Apr 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

IBM WebSphere DataPower Appliances 7.1, 7.2, 7.5, 7.5.1, 7.5.2, and 7.6 is vulnerable to a XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 139023.

Weakness: CWE-611

Which versions are affected by CVE-2018-1421?

It affects 1 product.

Products include Ibm Datapower Gateway.

How do I fix CVE-2018-1421?

No fix has been published for CVE-2018-1421 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-1421 being exploited?

There is no known exploitation of CVE-2018-1421 in the wild and no public exploit code.

Other vulnerabilities in Ibm Datapower Gateway

• CVE-2026-14269 IBM DataPower Gateway Buffer Overflow Critical 9.8
• CVE-2026-14502 IBM DataPower Gateway Improper Authentication Critical 9.8
• CVE-2026-14991 IBM DataPower Gateway Out-of-bounds Write Critical 9.8
• CVE-2026-14992 IBM DataPower Gateway Out-of-bounds Write Critical 9.8
• CVE-2026-15762 IBM DataPower Gateway Out-of-bounds Write Critical 9.8

All Ibm Datapower Gateway vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-jxg7-vv7x-x8fj.