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CVE-2026-30862 is a critical stored cross-site scripting vulnerability in Appsmith prior to version 1.96, affecting the Table Widget (TableWidgetV2). The issue is caused by insufficient HTML sanitization in the React component rendering pipeline, which allows malicious HTML attributes to be interpolated into the DOM and later executed in a victim administrator's browser. According to the provided details, an attacker with a regular Appsmith user account can use the "Invite Users" feature to target a System Administrator and trigger execution of a privileged request to /api/v1/admin/env. This enables abuse of the administrator's authenticated session and privileges, culminating in full administrative account takeover.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
Repository contains a minimal two-step PoC for an Appsmith XSS-to-privilege-escalation chain labeled CVE-2026-30862. Structure: (1) `CVE-2026-30862_POC/Step 1.json` provides a basic XSS verification payload (`<img onerror=alert(...)>`) to confirm script execution and leak `document.domain`. (2) `CVE-2026-30862_POC/Step 2.json` provides a weaponized payload that runs in the victim’s browser, extracts the `XSRF-TOKEN` from `document.cookie`, and issues a same-origin `fetch` request to `PUT /api/v1/admin/env` with `x-xsrf-token` to set `APPSMITH_ADMIN_EMAILS` to include `admin@gmail.com,user@gmail.com`, then alerts success. `README.md` briefly states the CVE and that it is an Appsmith privilege escalation via XSS. No standalone exploit runner is included; the JSON files appear intended to be imported/used as crafted content in whatever vulnerable input accepts these objects, resulting in stored/reflected XSS execution.
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3 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.