Oracle WebCenter Sites is a widely used enterprise CMS; unauthenticated network takeover can cause full site compromise and major business disruption.
CVE-2026-61018
Unauthenticated remote takeover of Oracle WebCenter Sites; RCE and full compromise.
Is CVE-2026-61018 being exploited?
Not confirmed. CVE-2026-61018 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.36% probability of exploitation in the next 30 days.
How severe is CVE-2026-61018?
CVE-2026-61018 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-61018?
Yes. A fix has been recorded for CVE-2026-61018. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-61018 affect?
CVE-2026-61018 affects Oracle WebCenter Sites 12.2.1.4.0, Oracle WebCenter Sites 14.1.2.0.0, Oracle Fusion Middleware - WebCenter Sites. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-61018?
Isolate affected hosts, restrict HTTP access, apply vendor patch/mitigations immediately and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated HTTP attack enables remote code execution and full takeover of WebCenter Sites (data theft, defacement, service disruption).
Immediate action required
- affected12.2.1.4.0
- affected14.1.2.0.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.