Vulnerability Report

CVE-2026-30862

Title: Appsmith Stored XSS Admin Takeover

XSS

Proof Of Concept

PoC Available for CVE-2026-30862

CWE Category CWE-79

Published Date Mar 10, 2026

Modified Date Mar 13, 2026

Exploit Status Available

Score 9.0 CVSS v3.1

Exploit Probability (EPSS)

0.31%

Vulnerability Summary

CVE-2026-30862: Appsmith is a platform to build admin panels, internal tools, and dashboards. Prior to 1.96, a Critical Stored XSS vulnerability exists in the Table Widget (TableWidgetV2). The root cause is a lack of HTML sanitization in the React component rendering pipeline, allowing malicious attributes to be interpolated into the DOM. By leveraging the "Invite Users" feature, an attacker with a regular user account ([email protected]) can force a System Administrator to execute a high-privileged API call (/api/v1/admin/env), resulting in a Full Administrative Account Takeover. This vulnerability is fixed in 1.96.

Impacted Vendors

appsmith 1

Reference Links

https://github.com/appsmithorg/appsmith/security/advisories/GHSA-5hw4-whxv-6794

CVSS v3.1

Source Entity [email protected]

Severity CRITICAL

9.0

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns