CVE-2026-59827

Metabase: Unsafe Deserialization of H2 Query Results

CVSS 9.9 CRITICALEPSS 0.5%CWE-502

Vexday Risk Score

48Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Proof of concept

Public proof of concept exists, but not yet automated.

CVSS 9.9EPSS 0.5%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

09 Jul 2026Published on NVD

15 Jul 2026Public PoC

Weaponization speed

6 daysto first PoC

Weaponized quickly — attackers prioritized this vulnerability. Patch urgently.

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

metabase · metabase

public PoCs found — 1

githubgithub.com/c0gnit00/CVE-2026-59827★ 0

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

https://github.com/metabase/metabase/commit/00f42511fe3bc4385652a2e96862ee6fd7d42cf8 https://github.com/metabase/metabase/releases/tag/v0.58.15 https://github.com/metabase/metabase/releases/tag/v0.59.12 https://github.com/metabase/metabase/releases/tag/v0.60.6.3 https://github.com/metabase/metabase/releases/tag/v0.61.1.4 https://github.com/metabase/metabase/security/advisories/GHSA-w95f-x9v9-wv36