---
id: "CVE-2026-101736"
kind: "vulnerability"
aliases: ["CVE-2026-101736"]
title: "Oracle Primavera Unifier: unauthenticated network flaw exposes and alters project data"
severity: "high"
cvss: 7.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["construction-management", "oracle", "package", "primavera-unifier", "self-hosted"]
not_affected_if: ["unknown"]
published_at: "2026-10-20T22:18:28+00:00"
first_seen_at: "2026-10-23T21:57:23+00:00"
updated_at: "2026-10-25T03:26:58+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101736", "first_seen_at": "2026-10-23T21:57:23+00:00"}]
---

# Oracle Primavera Unifier: unauthenticated network flaw exposes and alters project data

Oracle Primavera Unifier Core component versions 21.12.0 through 21.12.17 contain a flaw that an unauthenticated attacker can reach over HTTP, with high difficulty to exploit. Successful exploitation can allow unauthorized reading, creation, modification or deletion of critical data held in Unifier.

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

## How to check

- Check the installed Primavera Unifier version against the affected range `21.12.0` to `21.12.17`
- unknown for other checks, the sources do not say

## Fix

- Move Primavera Unifier to a release newer than `21.12.17` as listed in Oracle's Critical Patch Update
- unknown for other actions, the sources do not say

## Timeline

- 2026-10-23T21:57:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101736

## From the sources

Vulnerability in the Primavera Unifier product of Oracle Construction and Engineering (component: Core).  Supported versions that are affected are 21.12.0-21.12.17. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Primavera Unifier.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Primavera Unifier accessible data as well as  unauthorized access to critical data or complete access to all Primavera Unifier accessible data. CVSS 3.1 Base Score 7.4 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/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_