st

diff --git a/config.def.h b/config.def.h

index 7cfc07c..0f8b406 100644

--- a/config.def.h

+++ b/config.def.h

@@ -43,6 +43,10 @@ static unsigned int tripleclicktimeout = 600;

 /* alt screens */

 int allowaltscreen = 1;

+/* allow certain non-interactive (insecure) window operations such as:

+   setting the clipboard text */

+int allowwindowops = 0;

+

 /*

  * draw latency range in ms - from new content/keypress/etc until drawing.

  * within this range, st draws when content stops arriving (idle). mostly it's

diff --git a/st.c b/st.c

index b67152e..a0d728f 100644

--- a/st.c

+++ b/st.c

@@ -1861,7 +1861,7 @@ strhandle(void)

 				xsettitle(strescseq.args[1]);

 			return;

 		case 52:

-			if (narg > 2) {

+			if (narg > 2 && allowwindowops) {

 				dec = base64dec(strescseq.args[2]);

 				if (dec) {

 					xsetsel(dec);

diff --git a/st.h b/st.h

index 6e60b78..1e0298a 100644

--- a/st.h

+++ b/st.h

@@ -118,6 +118,7 @@ extern char *stty_args;

 extern char *vtiden;

 extern wchar_t *worddelimiters;

 extern int allowaltscreen;

+extern int allowwindowops;

 extern char *termname;

 extern unsigned int tabspaces;

 extern unsigned int defaultfg;