0011418: Handling of URLs containing % symbols has changed

ID	Project	Category	View Status	Date Submitted	Last Update

0011418	libmicrohttpd	HTTP GET/HEAD	public	2026-05-20 11:05	2026-05-20 11:05

Reporter	veloman-yunkan	Assigned To
Priority	normal	Severity	minor	Reproducibility	always
Status	new	Resolution	open

Summary	0011418: Handling of URLs containing % symbols has changed
Description	The commit https://git.gnunet.org/gnunet/libmicrohttpd/commit/ec6e6d288876606af964747f97379aa9371c4206.html has affected the handling of URLs containing a % symbol not followed by two valid hex digits (e.g. "http://localhost:8080/qwe%rty"). Before that change such URLs were accepted and the % symbol was preserved as is. Now such URLs are rejected with an HTTP 400 Bad Request error. The description of the said commit doesn't suggest that this change in behaviour was intentional, and that's why I am bringing it to your attention.
Steps To Reproduce	1. Build examples 2. ./src/examples/demo 8080 3. curl -D - http://localhost:8080/qwe%rty - Before the change in question, HTTP 404 Not Found response is returned - After the change in question, HTTP 400 Bad Reqest response is returned
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Date Modified	Username	Field	Change
2026-05-20 11:05	veloman-yunkan	New Issue