Main Vulnerability Database Vulnerabilities #VU128445

Cleartext transmission of sensitive information in cURL - CVE-2026-4873

Published: April 29, 2026

Vulnerability identifier: #VU128445

CSH Severity: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2026-4873

CWE-ID: CWE-319

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
cURL

Software vendor:
curl.haxx.se

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to connection reuse ignores TLS requirement. A remote attacker can gain access to sensitive data.

Install updates from vendor's website.