Quick answers
- Is CVE-2026-78582 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-78582 being exploited in the wild.
- How severe is CVE-2026-78582?
- Medium severity, with a CVSS score of 6.5, published 26 September 2026.
- Which products and versions are affected?
- Elastic Kibana 7.12.0 to 7.17.29, 8.0.0 to 8.19.21, 9.0.0 to 9.4.6, 9.5.0 to 9.5.2.
- Is there a fix for CVE-2026-78582?
- A patch was published on 2026-09-26: Fixed in Kibana 8.19.22, 9.4.7, 9.5.3 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-78582 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-78582?
- Check whether you run Elastic Kibana at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A missing authorization check (CWE-862) in Kibana's Synthetics API allows authenticated users with Synthetics privileges scoped to a single space to delete monitors shared into spaces where they lack authorization. When monitors are linked to private locations, the deletion also destroys Fleet integration configurations without triggering Fleet's own authorization checks. Attack requires authentication, network access, and a multi-space Kibana deployment with shared Synthetics monitors.
Affected products
- Elastic Kibana 7.12.0 to 7.17.29, 8.0.0 to 8.19.21, 9.0.0 to 9.4.6, 9.5.0 to 9.5.2
Timeline
- 2026-09-26: disclosed: Security advisory ESA-2026-139 published
- 2026-09-26: patched: Fixed in Kibana 8.19.22, 9.4.7, 9.5.3