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Fencer Intel
critical 9.9

CVE-2026-59827 json

Metabase: Unsafe Deserialization of H2 Query Results

published 4mo ago modified 3mo ago also EUVD-2026-42659

cvss
9.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.8%
EPSS 3.8% chance of exploitation in 30 days, percentile 90%
public exploits
1
Exploit-DB

Summary

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.

Patch / fix

  • metabase metabase 0.58.15, 0.59.12, 0.60.6.3, 0.61.1.4, 1.58.15, 1.59.12, 1.60.6.3, 1.61.1.4

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Timeline

  1. Published
  2. First public exploit (EDB-52680)

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
4mo ago

Exploit prediction

3.79% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • EDB-52680 Metabase 0.61.0 - Authenticated Remote Code Execution webapps, 2026-09-03

CVSS scores

assigned by version score vector
CNA 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • metabase metabase

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.