CVE-2023-26281

IBM HTTP Server denial of service

HIGH
7.5
CVSS Score
Published: February 28, 2023 at 02:19 PM UTC
Updated: June 17, 2026 at 05:42 AM UTC
3 products affected across 1 vendorHTTP ServerAIXZ /os· also runs on 4 platforms

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

IBM HTTP Server 8.5 used by IBM WebSphere Application Server could allow a remote user to cause a denial of service using a specially crafted URL. IBM X-Force ID: 248296.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

hp-hp-ux (environment) · ibm-aix (environment) · ibm-z-os (environment) · linux-linux-kernel (environment) · microsoft-windows (environment) · oracle-solaris (environment)
AIX· IBMdevice
80%
All versions
80%
All versions

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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