Deserialization in Metabase

CVE-2026-59827

Metabase is an open-source business intelligence and embedded analytics tool. Prior to 1.58.15, 1.59.12, 1.60.6.3, and 1.61.1.4, Metabase instances with an H2 database connection, including the default sample database, deserialize arbitrary Java objects returned in H2 native query result columns of type OTHER without validation, allowing an authenticated user who can run native H2 queries to execute code on the Metabase server. This issue is fixed in versions 1.58.15, 1.59.12, 1.60.6.3, and 1.61.1.4.

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.038 (89.7th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-59827: rose from 0.032 to 0.038.

EPSS over last 30 days · oldest: 0.032 · newest: 0.038 · change: +0.005

Affected products

  • Metabase — versions >= 1.58.0, < 1.58.15, >= 1.59.0, < 1.59.12, >= 1.60.0, < 1.60.6.3

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-59827?
CVE-2026-59827 is a critical-severity vulnerability in Metabase, classified under Deserialization of Untrusted Data. CVSS score: 9.9/10. Published 2026-07-09.
How severe is CVE-2026-59827?
Critical severity. CVSS v3 base score is 9.9 out of 10.
Is CVE-2026-59827 known to be exploited?
4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.