Vulnerability · Published May 28, 2025 · Assigned by curl
CVE-2025-4947QUIC certificate check skip with wolfSSL
Medium 6.5
In plain English
A medium-severity security flaw in curl from curl. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 77.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | curl | 8.14.0-r0 | ALPINE-CVE-2025-4947 |
| Alpine:v3.21 | curl | 8.14.0-r0 | ALPINE-CVE-2025-4947 |
| Alpine:v3.22 | curl | 8.14.0-r0 | ALPINE-CVE-2025-4947 |
| Alpine:v3.23 | curl | 8.14.0-r0 | ALPINE-CVE-2025-4947 |
| Alpine:v3.24 | curl | 8.14.0-r0 | ALPINE-CVE-2025-4947 |
| Debian:13 | curl | 8.14.0-1 | DEBIAN-CVE-2025-4947 |
| Debian:14 | curl | 8.14.0-1 | DEBIAN-CVE-2025-4947 |