CVE-2026-30862CWE-79

Critical Stored XSS & Privilege Escalation in Appsmith

Critical · published March 9, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
39.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00464 · 39.2th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-09T22:26Z
EPSS history
Timeline
  • 09 MAR 22:26Z
    Critical Stored XSS & Privilege Escalation in Appsmith
    cvelistv5