CVE-2025-11563

Published: Feb 25, 2026Modified: Jun 17, 2026

4.6

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Exploitability: 2.1 / Impact: 2.5

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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 (1)

Products: Curl: Wcurl

Curl

1 product

Wcurl

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Curl Wcurl	From 2024-12-08 to 2025-11-09

Running on/with	Platform Versions
Haxx Curl	From 8.14.0 to 8.18.0

Related CWEs

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (4)

https://curl.se/docs/CVE-2025-11563.html

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

PatchVendor Advisory

https://curl.se/docs/CVE-2025-11563.json

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

Vendor Advisory

http://www.openwall.com/lists/oss-security/2025/11/04/1

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

https://lists.debian.org/debian-release/2025/11/msg00504.html

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Mailing ListPatchThird Party Advisory

Timeline

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