What is CVE-2026-34411?

CVE-2026-34411 is a medium-severity vulnerability in Appsmith, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-03-27.

How severe is CVE-2026-34411?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Appsmith

CVE-2026-34411

Appsmith versions prior to 1.98 expose sensitive instance management API endpoints without authentication. Unauthenticated attackers can query endpoints like /api/v1/consolidated-api/view and /api/v1/tenants/current to retrieve configuration metadata, license information, and unsalted SHA-256 hashes of admin email domains for reconnaissance and targeted attack planning.

Vulnerability class: Broken Authentication

Published 2026-03-27 · last modified 2026-07-14.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (36.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.001

Affected products

Appsmith — versions 0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

github.com/appsmithorg/appsmith/security/advisories/GHSA-qvvc-prjx-f85j (Exploit, vendor-advisory, Third Party Advisory, patch)
www.vulncheck.com/advisories/appsmith-unauthenticated-instance-configuration-di… (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-34411?: CVE-2026-34411 is a medium-severity vulnerability in Appsmith, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-03-27.
How severe is CVE-2026-34411?: Medium severity. CVSS v3 base score is 5.3 out of 10.