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CVE-2026-46851 – Unauthenticated Remote System Takeover in Oracle PeopleSoft Enterprise CS Campus…

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Summary

CVE-2026-46851 is a high-severity vulnerability in the Security component of Oracle PeopleSoft Enterprise CS Campus Community, affecting version 9.2.38. The flaw allows an unauthenticated, network-based attacker to gain complete control of the affected system via HTTP, with Oracle’s own advisory characterizing successful exploitation as a potential "takeover of PeopleSoft Enterprise CS Campus Community." Published on June 16, 2026 as part of the Oracle June 2026 Critical Security Patch Update, this vulnerability carries a CVSS 3.1 base score of 8.1 (HIGH) and requires no credentials or user interaction to exploit.

Technical details

  • Affected component: Security component within Oracle PeopleSoft Enterprise CS Campus Community
  • Attack vector: Network-accessible via HTTP; no authentication or user interaction required
  • Attack complexity: High — exploitation requires non-default conditions to be met, though this does not preclude active exploitation
  • Impact: Complete compromise of confidentiality, integrity, and availability; Oracle classifies the outcome as full system takeover of the affected Campus Community instance
  • No CWE specified in the published CVE record; the full-triad High impact (C:H/I:H/A:H) is consistent with vulnerabilities such as authentication bypass or critical security control failures
  • No public proof-of-concept was identified at time of publication; the CVE was disclosed today (June 16, 2026)

Affected software

  • Oracle PeopleSoft Enterprise CS Campus Community version 9.2.38

Severity

  • CVSS v3.1 Base Score: 8.1 (HIGH)
  • Vector String: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Apply the Oracle June 2026 Critical Security Patch Update (CSPU). Oracle directs customers to the associated patch availability document (referenced as CPU167 in the advisory) for PeopleSoft Enterprise CS Campus Community patch installation instructions, available through My Oracle Support.
  • If patching is not immediately possible: Restrict internet-facing access to PeopleSoft Campus Community interfaces at the network perimeter; limit HTTP access to trusted source IPs only. Monitor for anomalous authentication events and unexpected administrative activity within Campus Community.
  • Broader context: Oracle PeopleSoft PeopleTools (CVE-2026-35273, CVSS 9.8) was actively exploited as a zero-day by the threat actor ShinyHunters (UNC6240) between May 27 and June 9, 2026, breaching more than 100 organizations — 68% of which were universities and colleges. Exploitation targeted the Environment Management Hub and Gateway endpoints and involved deploying persistent remote management agents. This active threat campaign against PeopleSoft infrastructure makes patching CVE-2026-46851 especially urgent for higher education institutions and enterprise organizations running internet-exposed PeopleSoft deployments.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts against Oracle PeopleSoft infrastructure and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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