CVE-2026-9336

IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities

At a glance

Severity: MEDIUM 6.5
EPSS: EPSS 0.77 % · percentile 55 (2026-10-27)
State: PUBLISHED
Published: 2026-09-10
Updated: 2026-09-14
Assigner: ibm
NVD status: Analyzed

Description

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specially-crafted HTTP request to an administrative endpoint. A remote attacker could exploit this vulnerability to cause the server to exhaust filesystem space.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	ibm
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · psirt@us.ibm.com (Secondary)
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-306

European references

ENISA EUVD · EUVD-2026-75677
GCVE · GCVE-0-2026-9336

Affected configurations (NVD CPE)

cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:-:*:*:* ≥ 8.5.0.0 < 8.5.5.31
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:-:*:*:* ≥ 9.0.0.0 < 9.0.5.29

Affected products

Product	Versions
IBM · WebSphere Application Server	affected 9.0 ; affected 8.5

References

https://www.ibm.com/support/pages/node/7286610

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD