Elastic Cloud Enterprise is widely used; vulnerability enables cross-deployment data disclosure on shared hosts, risking multi-tenant breaches and broad operational impact.
CVE-2026-115709
Symlink flaw in Elastic Cloud Enterprise allows cross-deployment data disclosure.
Is CVE-2026-115709 being exploited?
Not confirmed. CVE-2026-115709 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.
How severe is CVE-2026-115709?
CVE-2026-115709 is rated High with a CVSS score of 8.2. 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-2026-115709?
Yes. A fix has been recorded for CVE-2026-115709. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-115709 affect?
CVE-2026-115709 affects Elastic Cloud Enterprise (ECE) prior to 3.8.6, Elastic Cloud Enterprise (ECE) prior to 4.2.1, Multi-tenant hosts running ECE. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-115709?
Install ECE 3.8.6 / 4.2.1+ now; audit and isolate affected hosts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Symlink attack allows unauthorized access/read of files from other deployments on the same host, enabling data exfiltration and potential data loss.
Immediate action required
- affected>= 2.6.0 and <= 3.8.5
- affected>= 4.0.0 and <= 4.2.0
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.