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CVE-2026-35274 – Unauthenticated Information Disclosure / Partial Data Modification – Oracle Peop…

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Summary

CVE-2026-35274 is a high-severity unauthorized access vulnerability in Oracle PeopleSoft Enterprise PT PeopleTools, affecting the Deployment Package component. An unauthenticated remote attacker with network access via HTTP can exploit this flaw to gain unauthorized read access to sensitive data and perform limited data modification, with no user interaction required. The vulnerability carries a CVSS v3.1 base score of 8.2 (High) and was addressed in Oracle’s June 2026 Critical Security Patch Update.

Technical details

  • Root cause: Insufficient access controls in the Deployment Package component of PeopleSoft Enterprise PeopleTools, allowing unauthenticated HTTP requests to reach protected functionality.
  • Trigger conditions: The vulnerability is exploitable remotely over a network without any prior authentication or user interaction; attack complexity is low.
  • Attack vector: Network-accessible HTTP endpoint; no credentials or user involvement required.
  • Impact: Successful exploitation results in high confidentiality impact (unauthorized access to sensitive data held within or accessible through the Deployment Package component), limited integrity impact (potential unauthorized insert, update, or delete of some data), and no availability impact.

Affected software

  • Oracle PeopleSoft Enterprise PT PeopleTools 8.61
  • Oracle PeopleSoft Enterprise PT PeopleTools 8.62

Severity

  • CVSS v3.1 Base Score: 8.2 (High)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Mitigation and recommended actions

  • Immediate: Apply Oracle’s June 2026 Critical Security Patch Update (CPU), which contains the official fix for CVE-2026-35274 for PeopleSoft Enterprise PT PeopleTools 8.61 and 8.62. Patch details and installation instructions are available via My Oracle Support (Note CPU167).
  • If immediate patching is not feasible: Restrict network-level access to PeopleSoft Deployment Package endpoints so they are not reachable from untrusted networks or the public internet. Apply egress and ingress filtering at the perimeter to limit exposure until the patch can be applied.
  • Monitor PeopleSoft server logs for anomalous unauthenticated access attempts targeting deployment-related endpoints.

IONIX Status

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

References

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