A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system.

Related CVEs

CVE-2023-27533

Key Information

GHSA ID

GHSA-xvw3-6q4f-2gcv

Published

March 30, 2023 9:30 PM

Last Modified

March 27, 2024 3:30 PM

CVSS Score

7.5 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: September 19, 2025 6:29 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.