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CVE-2025-4947

Good to know:

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Date: May 28, 2025

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.

Severity Score

Related Resources (8)

http://www.openwall.com/lists/oss-security/2025/05/28/4
https://curl.se/docs/CVE-2025-4947.json
https://security-tracker.debian.org/tracker/CVE-2025-4947
https://nvd.nist.gov/vuln/detail/CVE-2025-4947
https://curl.se/docs/CVE-2025-4947.html
https://hackerone.com/reports/3150884
https://security.alpinelinux.org/vuln/CVE-2025-4947
https://www.mend.io/vulnerability-database/CVE-2025-4947

Severity Score

Top Fix

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Upgrade to version https://github.com/curl/curl.git - curl-8_14_0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

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