CVE-2025-4947

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-4947
libcurl accidentally skips the certificate verification for QUIC connections when connecting to a host specified as an IP address in the URL. Therefore, it does not detect impostors or man-in-the-middle attacks.

6.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://curl.se/docs/CVE-2025-4947.html Vendor Advisory Patch
https://curl.se/docs/CVE-2025-4947.json Vendor Advisory
https://hackerone.com/reports/3150884 Exploit Patch Issue Tracking
http://www.openwall.com/lists/oss-security/2025/05/28/4 Mailing List Patch Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
History

26 Jun 2025, 15:08

Type Values Removed Values Added
First Time Haxx curl
Haxx
CWE CWE-295
CPE cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
References () https://curl.se/docs/CVE-2025-4947.html - () https://curl.se/docs/CVE-2025-4947.html - Vendor Advisory, Patch
References () https://curl.se/docs/CVE-2025-4947.json - () https://curl.se/docs/CVE-2025-4947.json - Vendor Advisory
References () https://hackerone.com/reports/3150884 - () https://hackerone.com/reports/3150884 - Exploit, Patch, Issue Tracking
References () http://www.openwall.com/lists/oss-security/2025/05/28/4 - () http://www.openwall.com/lists/oss-security/2025/05/28/4 - Mailing List, Patch, Third Party Advisory

28 May 2025, 14:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.5
Summary
  • (es) libcurl omite accidentalmente la verificación del certificado para conexiones QUIC al conectarse a un host especificado como dirección IP en la URL. Por lo tanto, no detecta impostores ni ataques de intermediario.

28 May 2025, 08:15

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2025/05/28/4 -

28 May 2025, 07:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-05-28 07:15

Updated : 2025-06-26 15:08

NVD link : CVE-2025-4947

Mitre link : CVE-2025-4947

CVE.ORG link : CVE-2025-4947

JSON object : View

Products Affected

haxx

  • curl
CWE
CWE-295

Improper Certificate Validation