MediumCVE-2026-91376

    Oracle Primavera P6 Enterprise Project Portfolio Management: security vulnerability (CVE-2026-91376)

    Published Last modified Sources: BSI, Oracle CPU, CVE.org

    What is affected, what to do

    Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access). Supported versions that are affected are 21.12.0.0-21.12.21.9, 22.12.0.0-22.12.21.4, 23.12.0-23.12.20, 24.12.0-24.12.16 and 25.12.0-25.12.8.

    The available sources name no fixed version. Check the vendor guidance in the references below.

    Affected
    • Oracle Primavera P6 Enterprise Project Portfolio Management lte 21.12.0.0..21.12.21.9
    • Oracle Primavera P6 Enterprise Project Portfolio Management lte 22.12.0.0..22.12.21.4
    • Oracle Primavera P6 Enterprise Project Portfolio Management lte 23.12.0..23.12.20
    • Oracle Primavera P6 Enterprise Project Portfolio Management lte 24.12.0..24.12.16
    • Oracle Primavera P6 Enterprise Project Portfolio Management lte 25.12.0..25.12.8

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    6.5

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: NVD, CVSS v3

    6.5

    CVSS v3

    Severity Medium on the scale from 0 to 10.

    Source: BSI, Oracle CPU, CVE.org

    —

    EPSS score

    No value is available for this vulnerability.

    Show all metrics
    Severity
    Medium
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    62.50 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    6.5 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    6.5
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-284

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access). Supported versions that are affected are 21.12.0.0-21.12.21.9, 22.12.0.0-22.12.21.4, 23.12.0-23.12.20, 24.12.0-24.12.16 and 25.12.0-25.12.8. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Primavera P6 Enterprise Project Portfolio Management. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Primavera P6 Enterprise Project Portfolio Management, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Primavera P6 Enterprise Project Portfolio Management accessible data as well as unauthorized update, insert or delete access to some of Primavera P6 Enterprise Project Portfolio Management accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N).

    Source: BSI CSAF, BSI WID Portal, oracle_cpu, NVD (NIST), cvelistv5

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    VendorProductAffected versionsFixed in
    Oracle CorporationPrimavera P6 Enterprise Project Portfolio Management
    • 23.12.0 – ≤ 23.12.20
    • 22.12.0.0 – ≤ 22.12.21.4
    • 21.12.0.0 – ≤ 21.12.21.9
    • 25.12.0 – ≤ 25.12.8
    • 24.12.0 – ≤ 24.12.16
    • —
    • —
    • —
    • —
    • —
    OracleConstruction and Engineering
    • 22.12.0-22.12.15
    • 24.12.0-24.12.16
    • 25.12.0-25.12.9
    • 21.12.0-21.12.18
    • 23.12.0-23.12.16
    • 22.12.0.0-22.12.21.4
    • 23.12.0-23.12.20
    • 21.12.0.0-21.12.21.9
    • 21.12.0-21.12.17
    • 25.12.0-25.12.8
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —

    Weakness classes (CWE)

    • CWE-284Improper Access Control

      Pillar

      The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

      Entry at MITRE CWE-284

    References & sources

    Reanalysis & status changes

    Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

    1. New CVE Receivedsecalert_us@oracle.com

      • Description: after Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access). Supported versions that are affected are 21.12.0.0-21.12.21.9, 22.12.0.0-22.12.21.4, 23.12.0-23.12.20, 24.12.0-24.12.16 and 25.12.0-25.12.8. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Primavera P6 Enterprise Project Portfolio Management. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Primavera P6 Enterprise Project Portfolio Management, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Primavera P6 Enterprise Project Portfolio Management accessible data as well as unauthorized update, insert or delete access to some of Primavera P6 Enterprise Project Portfolio Management accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N).
      • CVSS V3.1: after AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N
      • Affected: after New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/91xxx/CVE-2026-91376.json">CVE-2026-91376</a>
      • Reference: after https://www.oracle.com/security-alerts/cpuoct2026.html
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