Widely deployed Oracle Fusion Middleware component; unauthenticated HTTP access could expose/modify critical data across many deployments.
CVE-2026-34291
Unauthenticated access via HTTP to Oracle HTTP Server can read/modify data.
Is CVE-2026-34291 being exploited?
Not confirmed. CVE-2026-34291 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 0.26% probability of exploitation in the next 30 days.
How severe is CVE-2026-34291?
CVE-2026-34291 is rated High with a CVSS score of 8.7. 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-2026-34291?
Yes. A fix has been recorded for CVE-2026-34291. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-34291 affect?
CVE-2026-34291 affects Oracle Fusion Middleware Oracle HTTP Server 12.2.1.4.0, Oracle Fusion Middleware Oracle HTTP Server 14.1.2.0.0. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-34291?
Patch when available; restrict HTTP access; monitor anomalies
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated access via HTTP could read/modify/delete Oracle HTTP Server data across deployments.
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.