NVD / CVE Program· CNA GitHub_M

CVE-2026-59827: Metabase: Unsafe Deserialization of H2 Query Results

Noroxi assessment

Priority: Monitor (action score 36/100)

Public proof-of-concept code exists (Exploit-DB, GitHub); there is no record of exploitation in the wild.
Probability of exploitation in the next 30 days: 3.7% (FIRST EPSS); higher than 90% of all records.
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
No fixed version is recorded, but the references include a patch (commit or PR) link.

Low priority for now. See the fix and affected versions sections below.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 8.8 · v3.1—Proof of concept No fix recorded

Deserialization

BDU:2026-10663

Published: Jul 9, 2026
Updated: Jul 13, 2026
EPSS: 3.7% · 90th percentile
CWE: CWE-502

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 35 / 40 · 8.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 3.7%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 8.8
CNA · GitHub_M: 9.9; 1.1 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
Proof of concept exists, no weaponized module
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
metabase	metabase	cpe:2.3:a:metabase:metabase

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

metabase metabase0.58.0 and later · before 0.58.15
metabase metabase0.59.0 and later · before 0.59.12
metabase metabase0.60.0 and later · before 0.60.6.3
metabase metabase0.61.0 and later · before 0.61.1.4
metabase metabase1.58.0 and later · before 1.58.15
metabase metabase1.59.0 and later · before 1.59.12
metabase metabase1.60.0 and later · before 1.60.6.3
metabase metabase1.61.0 and later · before 1.61.1.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

metabase metabase
- >= 1.58.0, < 1.58.15, >= 1.59.0, < 1.59.12, >= 1.60.0, < 1.60.6.3, >= 1.61.0, < 1.61.1.4affected

Same product

metabase: all records

Other highest-scoring records for the same primary product.

CVE-2026-72898Metabase SQL injection via password reset endpointKEV
99Now
CVE-2021-41277GeoJSON URL validation can expose server files and environment variables to unauthorized usersKEV
89Now
CVE-2023-38646Metabase open source before 0.46.6.1 and Metabase Enterprise before 1.46.6.1 allow attackers to execute arbitrary commands on the server, at
69This week

Published before and after this one in the same product

← EarlierCVE-2026-33725Mar 26, 2026 · Metabase vulnerable to RCE and Arbitrary File Read via H2 JDBC INIT Injection in EE Serialization Import
28Monitor
← EarlierCVE-2026-59826Jul 9, 2026 · Metabase: Arbitrary Code Execution via Database Connection Detail Bypass
36Monitor
Later →CVE-2026-50147Jul 15, 2026 · Metabase: Arbitrary File Read via MySQL Connection Property Injection
30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

Exploit-DB entry ×1
Proof-of-concept repository on GitHub ×4

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Exploit-DB entry	webapps	2026-09-03
Proof-of-concept repository on GitHub	stars:0	2026-07-15
Proof-of-concept repository on GitHub	stars:1	2026-07-23
Proof-of-concept repository on GitHub	stars:3	2026-08-12
Proof-of-concept repository on GitHub	stars:0	2026-09-17

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

PublishedJul 9, 2026
First PoCJul 15, 2026+5 d
TodayNov 11, 2026+124 d

EPSS, last 120 days+1% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

metabase/metabasecommit 00f4251

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-33725105 days apartMetabase vulnerable to RCE and Arbitrary File Read via H2 JDBC INIT Injection in EE Serialization Import
28Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-502 · Deserialization of Untrusted Data

CVSS vector

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

nvd-primary

Root cause

Data received over the network is deserialized into the language’s native object format without verifying its source. Code paths inside the object can be triggered during deserialization.

The bug in code

The whole CWE-502 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

python

1payload = sock.recv(65536)
2job = pickle.loads(payload)

Fixed

python

1payload = sock.recv(65536)
2if not hmac.compare_digest(sign(payload), header_sig):
3    raise PermissionError("invalid signature")
4job = JobSchema.validate(json.loads(payload))

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

Object InjectionCAPEC-586likelihood: Medium · High

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

github.com/metabase/metabase/commit/00f42511fe3bc4385652a2e96862ee6fd7d42cf8

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records