Auth bypass in Appsmith
CVE-2026-24042
Appsmith is a platform to build admin panels, internal tools, and dashboards. In versions 1.94 and below, publicly accessible apps allow unauthenticated users to execute unpublished (edit-mode) actions by sending viewMode=false (or omitting it) to POST /api/v1/actions/execute. This bypasses the expected publish boundary where public viewers should only execute published actions, not edit-mode versions. An attack can result in sensitive data exposure, execution of edit‑mode queries and APIs, development data access, and the ability to trigger side effect behavior. This issue does not have a released fix at the time of publication.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.007 (49.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001
Affected products
- Appsmith
- Appsmithorg Appsmith — versions <= 1.94
Weakness classification (CWE)
References
- github.com/appsmithorg/appsmith/security/advisories/GHSA-j9qq-4fj9-9883 (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-24042?
- CVE-2026-24042 is a critical-severity vulnerability in Appsmith, classified under Missing Authorization. CVSS score: 9.4/10. Published 2026-01-22.
- How severe is CVE-2026-24042?
- Critical severity. CVSS v3 base score is 9.4 out of 10.