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Medium severity6.5NVD Advisory· Published Sep 14, 2026

CVE-2026-15634

CVE-2026-15634

Description

IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty are vulnerable to HTTP request smuggling, caused by improper parsing of the HTTP transfer-encoding request header. By sending a specially crafted HTTP transfer-encoding request header, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.

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Affected products

2

Patches

Vulnerability mechanics

References

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