---
id: "CVE-2026-87302"
kind: "vulnerability"
aliases: ["CVE-2026-87302"]
title: "Oracle WebLogic Server: unauthenticated HTTP attacker can read and change data"
severity: "critical"
cvss: 9.1
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["java", "oracle", "runtime", "self-hosted", "weblogic"]
not_affected_if: ["managed-hosting", "other-versions"]
published_at: "2026-10-20T22:20:07+00:00"
first_seen_at: "2026-10-23T21:57:25+00:00"
updated_at: "2026-10-23T22:34:40+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87302", "first_seen_at": "2026-10-23T21:57:25+00:00"}]
---

# Oracle WebLogic Server: unauthenticated HTTP attacker can read and change data

Oracle WebLogic Server Core is affected by a flaw that lets an unauthenticated attacker over HTTP create, modify, or delete data the server can access, and read critical data. The CVSS 3.1 score is 9.1, with high confidentiality and integrity impact.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

Check the installed WebLogic version against 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0, for example with the version command in the WebLogic home directory (unknown exact command).

## Fix

Apply the Oracle Critical Patch Update that covers this CVE for your affected release (patch identifier unknown).

## Timeline

- 2026-10-23T21:57:25+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-87302

## From the sources

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core).  Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and  15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Oracle WebLogic Server accessible data as well as  unauthorized access to critical data or complete access to all Oracle WebLogic Server accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_