CVE-2026-55096 fast-mcp-telegram - Server Side Request Forgery

fast-mcp-telegram < 30.1 contains a server-side request forgery caused by improper URL validation allowing DNS resolution to private IPs, letting attackers exfiltrate internal resources as Telegram file attachments, exploit requires sending crafted URLs.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Server Side Request Forgery
Impact
Information Disclosure, File System Read
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Published
28 September 2026
Updated
15 October 2026
Weakness
CWE-184

Vendor fix

Update to version 30.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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