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CVE-2026-61054 – Unauthenticated Data Exposure & Tampering – Oracle WebCenter Sites 12.2.1.4.0 / 14.

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Summary

CVE-2026-61054 is a high-severity vulnerability in Oracle WebCenter Sites, a component of Oracle Fusion Middleware. Per Oracle’s official advisory, the flaw is "easily exploitable," allowing an unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Sites, resulting in unauthorized access to and disclosure of critical data as well as unauthorized update, insert, or delete operations on some accessible data. Oracle disclosed the issue on August 18, 2026, with a CVSS v3.1 base score of 8.2 (High).

Technical details

  • Root cause: Oracle’s advisory characterizes this as an easily exploitable vulnerability in the WebCenter Sites product; Oracle does not publish granular root-cause or code-level details in its advisories, so no further internal mechanism is confirmed publicly at this time.
  • Trigger conditions: The vulnerability is remotely exploitable over HTTP without requiring any authentication credentials or user interaction.
  • Attack vector: Network (AV:N) — an attacker only needs network access to the exposed WebCenter Sites HTTP interface; no privileges (PR:N) and no user interaction (UI:N) are required, and attack complexity is low (AC:L).
  • Impact: Successful exploitation grants unauthorized access to critical/sensitive data hosted by WebCenter Sites (Confidentiality: High) and allows limited unauthorized modification, insertion, or deletion of accessible data (Integrity: Low). There is no impact to availability (A:N).

Affected software

  • Oracle WebCenter Sites 12.2.1.4.0
  • Oracle WebCenter Sites 14.1.2.0.0

Severity

  • CVSS v3.1 Base Score: 8.2 (High)
  • Vector: 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 the Oracle Critical Patch Update / Security Patch Update for August 2026, which addresses CVE-2026-61054 for both affected Oracle WebCenter Sites releases (12.2.1.4.0 and 14.1.2.0.0). Organizations should update to the fixed versions specified in Oracle’s official advisory as soon as possible.
  • If patching cannot be performed immediately:
    • Restrict network exposure of WebCenter Sites management and application interfaces to trusted internal networks only; do not expose them directly to the internet.
    • Deploy a Web Application Firewall (WAF) or reverse proxy in front of WebCenter Sites to monitor and restrict anomalous unauthenticated HTTP requests.
    • Monitor WebCenter Sites access and application logs for unusual unauthenticated requests or unexpected data access/modification patterns.
    • Review and tighten network segmentation so that only authorized hosts can reach the WebCenter Sites HTTP endpoints.

References

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