# CVE-2026-17348: pgAdmin 4 missing authentication in multiple server-mode routes

Source: https://junglewise.ai/threats/cve-2026-17348-pgadmin-4-missing-authentication-in-multiple-server-mode-routes  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-31. Updated: 2026-07-31  
License: CC BY 4.0 with a link back

CVE-2026-17348 · Severity: medium · CVSS 6.5 · Published 2026-07-31

pgAdmin 4 is a popular management tool for PostgreSQL databases. In certain configurations, several internal functions were accidentally left accessible to anyone on the network without requiring a password. An unauthorized person could use this to delete database table constraints, view system preferences, or disrupt active debugging sessions, potentially leading to data loss or operational disruption.

## Quick answers

**Is CVE-2026-17348 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-17348 being exploited in the wild.

**How severe is CVE-2026-17348?** Medium severity, with a CVSS score of 6.5, published 31 July 2026.

**Which products and versions are affected?** pgadmin.org pgAdmin 4 < 9.17.

**Is there a fix for CVE-2026-17348?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-17348 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-17348?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A missing authentication check (CWE-306) exists in pgAdmin 4 when running in SERVER mode. The application relies on the '@pga_login_required' decorator to enforce authentication on a per-route basis, but several routes were identified as missing this decorator. Specifically, the Constraints blueprint (nodes, proplist, and delete routes), preferences.get_all_cli, debugger.close, and schema_diff.close are affected. An unauthenticated network attacker can exploit these endpoints to enumerate metadata, delete table constraints via state-mutating DELETE requests, or terminate sessions belonging to other users. This issue was addressed in version 9.17 by applying the missing decorators.

## Affected products

- pgadmin.org pgAdmin 4 < 9.17

## Timeline

- 2026-07-31: advisory: CVE-2026-17348 published
- 2026-07-31: disclosed

## References

- [https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/constraints/__init__.py](https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/constraints/__init__.py)
- [https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/tools/debugger/__init__.py](https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/tools/debugger/__init__.py)
- [https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/tools/schema_diff/__init__.py](https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/tools/schema_diff/__init__.py)
- [https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/preferences/__init__.py](https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/preferences/__init__.py)
- [https://github.com/pgadmin-org/pgadmin4/commit/24fdcf0f58591c87ada31366c01e1af180eceb05](https://github.com/pgadmin-org/pgadmin4/commit/24fdcf0f58591c87ada31366c01e1af180eceb05)
- [https://github.com/pgadmin-org/pgadmin4/issues/10194](https://github.com/pgadmin-org/pgadmin4/issues/10194)