diff --git a/CHANGELOG.md b/CHANGELOG.md
index dd2bfff..f1d6b0b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -40,6 +40,7 @@
   ([#330][330]).
 * i3/sway: incorrect empty/title state of workspaces ([#343][343]).
 * mem: state updated on each bar redraw ([#352][352]).
+* script: buffer overflow when reading large amounts of data.
 
 [311]: https://codeberg.org/dnkl/yambar/issues/311
 [302]: https://codeberg.org/dnkl/yambar/issues/302
diff --git a/modules/script.c b/modules/script.c
index 63928a6..0932cb2 100644
--- a/modules/script.c
+++ b/modules/script.c
@@ -298,7 +298,7 @@ data_received(struct module *mod, const char *data, size_t len)
 {
     struct private *m = mod->private;
 
-    if (len > m->recv_buf.sz - m->recv_buf.idx) {
+    while (len > m->recv_buf.sz - m->recv_buf.idx) {
         size_t new_sz = m->recv_buf.sz == 0 ? 1024 : m->recv_buf.sz * 2;
         char *new_buf = realloc(m->recv_buf.data, new_sz);