---
id: "CVE-2026-87897"
kind: "vulnerability"
aliases: ["CVE-2026-87897"]
title: "Whiteboard app: SSRF leaks another user's JWT token via Chrome DevTools"
severity: "medium"
cvss: 4.6
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["chrome-devtools-protocol", "jwt", "other", "whiteboard"]
not_affected_if: []
published_at: "2026-10-27T17:17:03+00:00"
first_seen_at: "2026-10-27T17:32:47+00:00"
updated_at: "2026-10-27T17:34:55+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87897", "first_seen_at": "2026-10-27T17:32:47+00:00"}]
---

# Whiteboard app: SSRF leaks another user's JWT token via Chrome DevTools

A server-side request forgery flaw lets a low-privileged user reach internal Chrome DevTools Protocol APIs. An attacker can capture another user's JWT authentication token when that user starts a recording, then read and write that user's Whiteboard.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-10-27T17:32:47+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-87897

## From the sources

A SSRF vulnerability found that enables access to internal Chrome Devtools Protocol APIs that can leak the JWT authentication token for another user. A low privileged attacker could continually exploit this vulnerability to leak the JWT authentication token for another user when they start a recording, which then enables the attacker read/write access to the victim's Whiteboard.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_