---
title: "CVE-2026-86864: pgAdmin 4 - Command Injection"
description: "pgAdmin 4 < 9.18 contains an arbitrary file creation and connection-string injection vulnerability caused by improper validation of the 'database' field in the Backup tool's /backup/job/<sid>/object request, letting authenticated users with tools_backup permission overwrite files and redirect database connections, exploit requires authenticated user with tools_backup permission."
url: https://panop.io/threat-heartbeat/CVE-2026-86864/
---

# CVE-2026-86864 pgAdmin 4 - Command Injection

pgAdmin 4 < 9.18 contains an arbitrary file creation and connection-string injection vulnerability caused by improper validation of the 'database' field in the Backup tool's /backup/job/<sid>/object request, letting authenticated users with tools\_backup permission overwrite files and redirect database connections, exploit requires authenticated user with tools\_backup permission.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.58% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-86864)

## Details

Type

Command Injection

Impact

File System Write, Information Disclosure

CVSS vector

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

Published

17 September 2026

Updated

15 October 2026

Weakness

[CWE-22](https://cwe.mitre.org/data/definitions/22.html)

## Vendor fix

Update to version 9.18 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-86864](https://nvd.nist.gov/vuln/detail/CVE-2026-86864)
- [https://github.com/pgadmin-org/pgadmin4/issues/10384](https://github.com/pgadmin-org/pgadmin4/issues/10384)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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