Elasticsearch vulnerabilities: known CVEs & security history
Elastic · Database · 27 tracked CVEs · 0 actively exploited · updated September 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Elasticsearch release lines — 27 in total. A CVE here doesn't mean your version is affected — check Elasticsearch's current status and the safe version to run.
Known Elasticsearch CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2026-72649 | high | 8.8 | 1% | 2026 |
| CVE-2026-72642 | high | 8.8 | 0% | 2026 |
| CVE-2026-72687 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72686 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72684 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72683 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72679 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72678 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72656 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72647 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72645 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72639 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72638 | medium | 6.5 | 0% | 2026 |
| CVE-2026-72636 | medium | 6.5 | 0% | 2026 |
| CVE-2026-63263 | medium | 6.5 | 0% | 2026 |
| CVE-2026-63144 | medium | 6.5 | 0% | 2026 |
| CVE-2026-63140 | medium | 6.5 | 0% | 2026 |
| CVE-2026-63136 | medium | 6.5 | 0% | 2026 |
| CVE-2026-56145 | medium | 6.5 | 0% | 2026 |
| CVE-2026-49090 | medium | 6.5 | 0% | 2026 |
| CVE-2026-56148 | medium | 6.5 | 0% | 2026 |
| CVE-2026-78605 | medium | 5.9 | 0% | 2026 |
| CVE-2026-78607 | medium | 5.4 | 0% | 2026 |
| CVE-2026-56144 | medium | 5.3 | 0% | 2026 |
| CVE-2026-56143 | medium | 4.9 | 0% | 2026 |
| CVE-2026-56149 | medium | 4.9 | 0% | 2026 |
| CVE-2026-72685 | medium | 4.3 | 0% | 2026 |
Is my Elasticsearch version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your Elasticsearch version → · Monitor Elasticsearch for new CVEs →
Elasticsearch vulnerabilities — frequently asked
How many known vulnerabilities does Elasticsearch have?
IsItPatched tracks 27 CVEs for Elasticsearch. 0 are critical-severity and 2 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Elasticsearch have any actively-exploited vulnerabilities?
None of Elasticsearch's tracked CVEs are currently in CISA's KEV catalog — but new ones can be added at any time, so keep your version current.
What is the most severe Elasticsearch vulnerability?
Among tracked issues, CVE-2026-72649 (HIGH, CVSS 8.8) ranks highest — a Insecure deserialization weakness.
Is Elasticsearch safe to use?
It depends on the version. The latest supported Elasticsearch release (9.5.3) clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: Elasticsearch security status · Elasticsearch end-of-life · actively-exploited CVEs. Always verify against Elastic's advisories — see our disclaimer.