AUGUST 4, 2026
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Case File

CVE-2025-34072

UNKNOWN · CVSS N/A EPSS 0.37%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-07-02 · Last synced 2026-08-04

CyberRota Analysis

This vulnerability has an unknown severity rating. See the original NVD description below for full technical details.

CVE
CVE-2025-34072
Severity
UNKNOWN
CVSS
N/A
EPSS
0.37%

Original NVD Description

A data exfiltration vulnerability exists in Anthropic’s deprecated Slack Model Context Protocol (MCP) Server via automatic link unfurling. When an AI agent using the Slack MCP Server processes untrusted data, it can be manipulated to generate messages containing attacker-crafted hyperlinks embedding sensitive data. Slack’s link preview bots (e.g., Slack-LinkExpanding, Slackbot, Slack-ImgProxy) will then issue outbound requests to the attacker-controlled URL, resulting in zero-click exfiltration of private data.