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CVE-2026-61029 – Unauthenticated Remote Takeover – Oracle WebCenter Sites 12.2.1.4.0 / 14.1.2.0.0

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Summary

CVE-2026-61029 is a critical vulnerability in the Oracle WebCenter Sites component of Oracle Fusion Middineware that allows an unauthenticated, remote attacker to fully compromise the affected system via HTTP. Oracle rates the flaw "difficult to exploit," but a successful attack results in complete takeover of Oracle WebCenter Sites and, due to a scope change, may impact additional connected products. The issue carries a CVSS v3.1 base score of 9.0 (Critical) and was disclosed as part of Oracle’s August 2026 Critical Security Patch Update (CSPU).

Technical details

  • Root cause: Oracle has not published low-level technical root-cause details (e.g., no CWE classification or exploit writeup is included in the official CVE record), consistent with Oracle’s standard practice of withholding vulnerability internals in CPU/CSPU advisories.
  • Trigger conditions: No authentication and no user interaction are required; the attacker only needs network access to the WebCenter Sites HTTP interface.
  • Attack vector: Network (AV:N), with high attack complexity (AC:H) — Oracle classifies this as "difficult to exploit," suggesting the attack may depend on specific configuration, timing, or environmental conditions rather than a trivial single-request exploit.
  • Impact: Scope is "Changed" (S:C), meaning a successful exploit can affect resources beyond the vulnerable WebCenter Sites component itself, with high impact to confidentiality, integrity, and availability (full system takeover).

Affected software

  • Oracle WebCenter Sites version 12.2.1.4.0
  • Oracle WebCenter Sites version 14.1.2.0.0

Severity

  • CVSS v3.1 Base Score: 9.0 (Critical)
  • CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Apply the fixes provided in Oracle’s August 2026 Critical Security Patch Update (CSPU) for Oracle WebCenter Sites versions 12.2.1.4.0 and 14.1.2.0.0. Oracle strongly recommends applying CPU/CSPU fixes as soon as possible.
  • If immediate patching is not possible: Restrict network exposure of WebCenter Sites management and content-delivery interfaces to trusted networks only (e.g., via firewall rules or VPN), and monitor HTTP access logs for anomalous or unexpected requests until the patch can be applied. Oracle advisories generally note that no complete mitigation exists outside of applying the official patches, so exposure reduction should be treated as a temporary compensating control only.

References

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