CVE-2026-9330High· 8.5▾ TwilightIBM WebSphere Application Server 9.0, and 8.5 is affected by an improper validation of user-supplied data during deserialization using the SAML Web Single Sign-On component. This could result in remote code execution via a crafted HTTP r…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 46.8 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Jul 31.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.5%
0.5% → 0.7%
IBM WebSphere Application Server 9.0, and 8.5 is affected by an improper validation of user-supplied data during deserialization using the SAML Web Single Sign-On component. This could result in remote code execution via a crafted HTTP request when combined with a suitable gadget chain.
websphere_application_server >= 8.5.0.0, < 8.5.5.30websphere_application_server >= 9.0.0.0, < 9.0.5.29Upgrade past the affected range:
websphere_application_server 9.0.5.29Connected by shared product, vendor, weakness, or advisory.
CVE-2026-9319Critical· 9.0IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to potential remote code execution due to deserialization of untrusted data via JAX-WS endpoints with WS-Security.
CVE-2026-9311Critical· 9.0IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to remote code execution caused by the bypass of security controls.
CVE-2026-12155Medium· 6.5IBM MQ Deserialization of Untrusted Data
CVE-2026-12148High· 7.5IBM MQ Deserialization of Untrusted Data
CVE-2026-12350Medium· 6.5IBM MQ Deserialization of Untrusted Data
CVE-2026-4410Medium· 4.8IBM WebSphere Application Server - Liberty 19.0.0.7 through 26.0.0.5 and IBM WebSphere Application Server 9.0, and 8.5 and WebSphere Application Server Liberty are vulnerable to a denial of service, caused by sending a specially-crafted …