CVE-2025-34072 describes a critical data exfiltration vulnerability in Anthropic’s deprecated Slack Model Context Protocol (MCP) Server. This flaw allows an attacker to craft malicious hyperlinks within AI-generated messages, leveraging Slack's link preview bots to exfiltrate sensitive data without user interaction. With a CVSS score of 9.3, this vulnerability poses a high risk due to its network-based attack vector, low attack complexity, and potential for high confidentiality and integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Anthropic | Slack MCP Server | 0CNA affecteddefault unaffected |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.