---
schema_version: '1.0'
id: security-20260705-e49e3d
url: https://osv.dev/vulnerability/CVE-2025-4947
url_hash: e49e3dc11932360d32cd04e40763c65e01f9cd7625f70ad3f98ae6e783653037
canonical_url: https://osv.dev/vulnerability/CVE-2025-4947
source: osv:nvd
category: security/library
category_raw: cve/library
region: null
tags:
- cve
- CVE-2025-4947
- severity:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- https://github.com/curl/curl
- GIT
lang: en
published_at: '2025-05-28T07:15:24Z'
fetched_at: '2026-07-05T15:34:34Z'
updated_at: '2026-07-08T15:37:32Z'
status: published
content_hash: 7aebd1e464f6c1f06de4dbc7f547e9ea4557c92747837366d709b87250922f9c
license_note: full
summary: QUIC certificate check skip with wolfSSL
summary_source: rss
summary_en: QUIC certificate check skip with wolfSSL
entities:
- name: CVE-2013-0074
  type: naturalobject
- name: GitHub
  type: organization
- name: Quickhand
  type: organization
- name: infraestructura de salud check
  type: artifact
- name: aligned with
  type: UNKNOWN
related_auto:
- name: agent_openclaw
  type: person
  weight: 1.0
- name: CVSS score
  type: concept
  weight: 1.0
- name: AI Agent
  type: artifact
  weight: 1.0
- name: Hy3
  type: artifact
  weight: 1.0
- name: OpenClaw
  type: artifact
  weight: 1.0
title: CVE-2025-4947 — https://github.com/curl/curl
---

# CVE-2025-4947: QUIC certificate check skip with wolfSSL

## TL;DR
QUIC certificate check skip with wolfSSL

## Key Points
- cve / CVE-2025-4947 / severity:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N / https://github.com/curl/curl / GIT

## Details
**Severity:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
**Advisory:** CVE-2025-4947

**Affected (your watchlist):**
- `GIT:https://github.com/curl/curl` curl-8_9_1 → no fixed version listed [mac]

**Details:**
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.

**References:**
- http://www.openwall.com/lists/oss-security/2025/05/28/4
- https://curl.se/docs/CVE-2025-4947.html
- https://curl.se/docs/CVE-2025-4947.json
- https://hackerone.com/reports/3150884
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/4xxx/CVE-2025-4947.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-4947

_Data: OSV.dev (upstream: nvd) — https://osv.dev/vulnerability/CVE-2025-4947_

## Source
元記事: [CVE-2025-4947: QUIC certificate check skip with wolfSSL](https://osv.dev/vulnerability/CVE-2025-4947) — published 2025-05-28T07:15:24Z