Is CVE-2026-40163 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-40163, but active exploitation has not been confirmed.

Can CVE-2026-40163 be exploited remotely?

Yes. CVE-2026-40163 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-40163?

CVE-2026-40163 has a CVSS score of 8.2 (HIGH).

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HIGHPOC

CVE-2026-40163

CWE-22Published: April 10, 2026· Updated: Apr 13, 2026

8.2

CVSS v3.1

Official Description

Saltcorn is an extensible, open source, no-code database application builder. Prior to 1.4.5, 1.5.5, and 1.6.0-beta.4, the POST /sync/offline_changes endpoint allows an unauthenticated attacker to create arbitrary directories and write a changes.json file with attacker-controlled JSON content anywhere on the server filesystem. The GET /sync/upload_finished endpoint allows an unauthenticated attacker to list arbitrary directory contents and read specific JSON files. This vulnerability is fixed in 1.4.5, 1.5.5, and 1.6.0-beta.4.

NVD Source

Technical Analysis

CVE-2026-40163 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 8.2.

A proof-of-concept (PoC) exploit exists for CVE-2026-40163. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.