Vulnerability · Published Feb 25, 2026 · Assigned by curl
CVE-2025-11563wcurl path traversal with percent-encoded slashes
Medium 4.6
In plain English
A medium-severity security flaw in curl from curl. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.6Medium
Exploit odds (30 days)0.4%top 63.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
URLs containing percent-encoded slashes (`/` or `\`) can trick wcurl into saving the output file outside of the current directory without the user explicitly asking for it. This flaw only affects the wcurl command line tool.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | curl | 8.14.1-2+deb13u2 | DEBIAN-CVE-2025-11563 |
| Debian:14 | curl | 8.17.0-2 | DEBIAN-CVE-2025-11563 |
| Ubuntu:22.04:LTS | curl | 7.81.0-1ubuntu1.22 | USN-8062-1 |
| Ubuntu:24.04:LTS | curl | 8.5.0-2ubuntu10.7 | USN-8062-1 |
| Ubuntu:25.10 | curl | 8.14.1-2ubuntu1.1 | USN-8062-1 |
| Ubuntu:25.10 | curl | 8.14.1-2ubuntu1.1 | UBUNTU-CVE-2025-11563 |