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CVE-2026-83248 – Unauthenticated DoS & Unauthorized Data Read – Oracle Commerce Guided Search/Experi

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Summary

CVE-2026-83248 is a high-severity vulnerability in the Forge component of Oracle Commerce Guided Search / Oracle Commerce Experience Manager. It allows an unauthenticated, network-based attacker communicating over HTTP to trigger denial-of-service conditions and obtain unauthorized read access to data accessible by the component. The flaw carries a CVSS v3.1 base score of 8.2 (High) and was disclosed by Oracle as part of its September 2026 Critical Patch Update.

Technical details

  • Root cause: The vulnerability resides in the Forge component of Oracle Commerce Guided Search/Experience Manager, the data-processing engine that ingests and transforms source data into indexable Guided Search records.
  • Trigger conditions: No authentication or user interaction is required; the attacker only needs network access to the affected HTTP service.
  • Attack vector: Network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N).
  • Impact: Low confidentiality impact (unauthorized read access to some accessible data) combined with a high availability impact (ability to cause denial-of-service conditions on the Forge component). Integrity is not affected (I:N).

Affected software

  • Oracle Commerce Guided Search / Oracle Commerce Experience Manager, version 11.4.0 (Forge component)

Severity

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

Mitigation and recommended actions

  • Immediate: Apply the fix provided in Oracle’s September 2026 Critical Patch Update for Oracle Commerce Guided Search/Experience Manager 11.4.0. Oracle strongly recommends that customers apply Critical Patch Update fixes as soon as possible.
  • If patching cannot be performed immediately: Restrict network access to the Forge component/HTTP endpoints to trusted internal hosts only, and monitor for unusual HTTP traffic patterns or repeated requests that could indicate exploitation attempts targeting availability.

References

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