diff -ru a/src/libpcp/src/logmeta.c b/src/libpcp/src/logmeta.c
--- a/src/libpcp/src/logmeta.c	2025-03-27 00:25:53.000000000 -0400
+++ b/src/libpcp/src/logmeta.c	2026-03-05 13:25:46.905000000 -0500
@@ -1261,6 +1261,8 @@
 	    }
 	}
 	didp->numinst = numinst;
+	if (didp->alloc & PMLID_INSTLIST)
+	    free(didp->instlist);
 	didp->instlist = instlist;
 	if (didp->alloc & PMLID_NAMELIST)
 	    free(didp->namelist);
@@ -1962,7 +1964,6 @@
 	 */
 	memset((void *)lidp, 0, sizeof(*lidp));
     }
-
 }
 
 /*
Only in b/src/libpcp/src: logmeta.c.orig
diff -ru a/src/libpcp_web/src/webgroup.c b/src/libpcp_web/src/webgroup.c
--- a/src/libpcp_web/src/webgroup.c	2026-03-05 13:26:10.539000000 -0500
+++ b/src/libpcp_web/src/webgroup.c	2026-03-05 13:25:39.785000000 -0500
@@ -1969,13 +1969,13 @@
 				    scrape->numnames, scrape->names,
 				    scrape->mplist, scrape->pmidlist,
 				    scrape->msg, scrape->arg);
-	for (i = 0; i < scrape->numnames; i++)
-	    sdsfree(scrape->names[i]);
-	scrape->numnames = 0;
     } else {
 	infofmt(*scrape->msg, "'%s' - %s", prefix,
 		pmErrStr_r(sts, err, sizeof(err)));
     }
+    for (i = 0; i < scrape->numnames; i++)
+	sdsfree(scrape->names[i]);
+    scrape->numnames = 0;
 
     if (sts >= 0)
 	sts = (scrape->status < 0) ? scrape->status : 0;
diff -ru a/src/pmproxy/src/http.c b/src/pmproxy/src/http.c
--- a/src/pmproxy/src/http.c	2025-03-30 21:41:26.000000000 -0400
+++ b/src/pmproxy/src/http.c	2026-03-05 13:25:31.948000000 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2020,2023 Red Hat.
+ * Copyright (c) 2019-2020,2023,2025 Red Hat.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU Lesser General Public License as published
@@ -500,14 +500,18 @@
 		    client->buffer ? (long unsigned)sdslen(client->buffer) : 0, client);
 
 	buffer = sdsempty();
-	suffix = client->buffer;
-	if (suffix == NULL) {	/* error or no data currently accumulated */
+
+	if (client->buffer == NULL) {
+	    /* error or no data currently accumulated */
 	    suffix = prepare_buffer(client, message, flags, 1);
 	} else if (message != NULL) {
-	    suffix = sdscatsds(suffix, message);
+	    suffix = sdscatsds(client->buffer, message);
 	    suffix = prepare_buffer(client, suffix, flags, 1);
 	    sdsfree(message);
+	} else {
+	    suffix = client->buffer;
 	}
+	client->buffer = NULL;
 	message = NULL;
 
 	pmsprintf(length, sizeof(length), "%lX",
@@ -516,8 +520,6 @@
 	sdsfree(suffix);
 	suffix = NULL;
 
-	client->buffer = NULL;
-
 	if (!(client->u.http.flags & HTTP_FLAG_FLUSHING)) {
 	    client->u.http.flags &= ~HTTP_FLAG_STREAMING; /* end of stream! */
 	    suffix = sdsnewlen("0\r\n\r\n", 5);		/* chunked suffix */
@@ -537,10 +539,10 @@
 	} else if (message != NULL) {
 	    suffix = sdscatsds(client->buffer, message);
 	    sdsfree(message);
-	    client->buffer = NULL;
 	} else {
-	    suffix = sdsempty();
+	    suffix = client->buffer;
 	}
+	client->buffer = NULL;
 	suffix = prepare_buffer(client, suffix, flags, 1);
 	buffer = http_response_header(client, sdslen(suffix), sts, type);
     }
@@ -689,7 +691,8 @@
 		pmsprintf(length, sizeof(length), "%lX",
 			    (unsigned long)sdslen(client->buffer));
 		buffer = sdscatfmt(buffer, "%s\r\n%S\r\n", length, client->buffer);
-		/* reset for next call - original released on I/O completion */
+		/* reset for next call - buffer released on I/O completion */
+		sdsfree(client->buffer);
 		client->buffer = NULL;	/* safe, as now held in 'buffer' */
 	    } else if (!buffer) {
 		return; /* streaming + compressing, nothing to send yet */
Only in b/src/pmproxy/src: http.c.orig