[PATCH 1/1] wget: don't allow control characters or spaces in the URL

[Radoslav Kolev]

Fixes CVE-2025-60876 malicious URL can be used to inject
HTTP headers in the request.

Signed-off-by: Radoslav Kolev <radoslav.kolev at suse.com>
---
 networking/wget.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/networking/wget.c b/networking/wget.c
index ec3767793..b8a6d02bb 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -536,6 +536,15 @@ static void parse_url(const char *src_url, struct host_info *h)
 {
 	char *url, *p, *sp;
 
+	/* Fix for CVE-2025-60876 - don't allow control characters or spaces in the URL */
+	/* otherwise a malicious URL can be used to inject HTTP headers in the request */
+	unsigned char *u = (void *) src_url;
+	while (*u) {
+		if (*u <= ' ')
+			bb_simple_error_msg_and_die("Unencoded control character found in the URL!");
+		u++;
+	}
+
 	free(h->allocated);
 	h->allocated = url = xstrdup(src_url);
 
-- 
2.51.1