diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5628d2dd0..b3c46bdb6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 * Features
 	* Support custom ports `localhost:3306` for database servers [#1241](https://github.com/FreshRSS/FreshRSS/issues/1241)
+* Security
+	* Prevent `<a target="_blank">` attacks with `window.opener` [#1245](https://github.com/FreshRSS/FreshRSS/issues/1245)
 * UI
 	* Download icon 💾 for podcasts [#1236](https://github.com/FreshRSS/FreshRSS/issues/1236)
 
diff --git a/app/layout/aside_feed.phtml b/app/layout/aside_feed.phtml
index e8fdbf842..94c281b7f 100644
--- a/app/layout/aside_feed.phtml
+++ b/app/layout/aside_feed.phtml
@@ -79,7 +79,7 @@
 		<?php if (FreshRSS_Auth::hasAccess()) { ?>
 		<li class="item"><a href="<?php echo _url('stats', 'repartition', 'id', '------'); ?>"><?php echo _t('index.menu.stats'); ?></a></li>
 		<?php } ?>
-		<li class="item"><a target="_blank" href="http://example.net/"><?php echo _t('gen.action.see_website'); ?></a></li>
+		<li class="item"><a target="_blank" rel="noreferrer" href="http://example.net/"><?php echo _t('gen.action.see_website'); ?></a></li>
 		<?php if (FreshRSS_Auth::hasAccess()) { ?>
 		<li class="separator"></li>
 		<li class="item"><a href="<?php echo _url('subscription', 'index', 'id', '------'); ?>"><?php echo _t('gen.action.manage'); ?></a></li>
diff --git a/app/layout/aside_subscription.phtml b/app/layout/aside_subscription.phtml
index fa10d63e8..e14afe2a7 100644
--- a/app/layout/aside_subscription.phtml
+++ b/app/layout/aside_subscription.phtml
@@ -10,7 +10,7 @@
 	</li>
 
 	<li class="item">
-		<a class="bookmarkClick" href="javascript:(function(){var%20url%20=%20location.href;window.open('<?php echo Minz_Url::display(array('c' => 'feed', 'a' => 'add'), 'html', true); ?>&amp;url_rss='+encodeURIComponent(url), '_blank');})();">
+		<a class="bookmarkClick" href="javascript:(function(){var%20url%20=%20location.href;var%20otherWindow=window.open('about:blank','_blank');otherWindow.opener=null;otherWindow.location='<?php echo Minz_Url::display(array('c' => 'feed', 'a' => 'add'), 'html', true); ?>&amp;url_rss='+encodeURIComponent(url);})();">
 			<?php echo _t('sub.menu.bookmark'); ?>
 		</a>
 	</li>
diff --git a/app/layout/nav_menu.phtml b/app/layout/nav_menu.phtml
index 23255f04f..d77c1abf9 100644
--- a/app/layout/nav_menu.phtml
+++ b/app/layout/nav_menu.phtml
@@ -152,7 +152,7 @@
 				$url_output['params']['token'] = FreshRSS_Context::$user_conf->token;
 			}
 		?>
-		<a class="view_rss btn" target="_blank" title="<?php echo _t('index.menu.rss_view'); ?>" href="<?php echo Minz_Url::display($url_output); ?>">
+		<a class="view_rss btn" target="_blank" rel="noreferrer" title="<?php echo _t('index.menu.rss_view'); ?>" href="<?php echo Minz_Url::display($url_output); ?>">
 			<?php echo _i('rss'); ?>
 		</a>
 	</div>
diff --git a/app/views/configure/sharing.phtml b/app/views/configure/sharing.phtml
index 0dad5bf6d..ffcfb8b29 100644
--- a/app/views/configure/sharing.phtml
+++ b/app/views/configure/sharing.phtml
@@ -13,7 +13,7 @@
 			<input type="text" id="share_##key##_name" name="share[##key##][name]" class="extend" value="" placeholder="<?php echo _t('conf.sharing.share_name'); ?>" size="64" />
 			<input type="url" id="share_##key##_url" name="share[##key##][url]" class="extend" value="" placeholder="<?php echo _t('conf.sharing.share_url'); ?>" size="64" />
 			<a href="#" class="remove btn btn-attention" data-remove="group-share-##key##"><?php echo _i('close'); ?></a></div>
-			<a target="_blank" class="btn" title="<?php echo _t('conf.sharing.more_information'); ?>" href="##help##"><?php echo _i('help'); ?></a>
+			<a target="_blank" rel="noreferrer" class="btn" title="<?php echo _t('conf.sharing.more_information'); ?>" href="##help##"><?php echo _i('help'); ?></a>
 			</div></div>'>
 		<input type="hidden" name="_csrf" value="<?php echo FreshRSS_Auth::csrfToken(); ?>" />
 		<legend><?php echo _t('conf.sharing'); ?></legend>
@@ -38,7 +38,7 @@
 						<a href='#' class='remove btn btn-attention' data-remove="group-share-<?php echo $key; ?>"><?php echo _i('close'); ?></a>
 					</div>
 					<?php if ($share->formType() === 'advanced') { ?>
-						<a target="_blank" class="btn" title="<?php echo _t('conf.sharing.more_information'); ?>" href="<?php echo $share->help(); ?>"><?php echo _i('help'); ?></a>
+						<a target="_blank" rel="noreferrer" class="btn" title="<?php echo _t('conf.sharing.more_information'); ?>" href="<?php echo $share->help(); ?>"><?php echo _i('help'); ?></a>
 					<?php } ?>
 				</div>
 			</div>
diff --git a/app/views/feed/add.phtml b/app/views/feed/add.phtml
index caf685d79..5cd59d298 100644
--- a/app/views/feed/add.phtml
+++ b/app/views/feed/add.phtml
@@ -30,7 +30,7 @@
 			<label class="group-name"><?php echo _t('sub.feed.website'); ?></label>
 			<div class="group-controls">
 				<?php echo $this->feed->website(); ?>
-				<a class="btn" target="_blank" href="<?php echo $this->feed->website(); ?>"><?php echo _i('link'); ?></a>
+				<a class="btn" target="_blank" rel="noreferrer" href="<?php echo $this->feed->website(); ?>"><?php echo _i('link'); ?></a>
 			</div>
 		</div>
 		<?php } ?>
@@ -40,9 +40,9 @@
 			<div class="group-controls">
 				<div class="stick">
 					<input type="text" name="url_rss" id="url" class="extend" value="<?php echo $this->feed->url(); ?>" />
-					<a class="btn" target="_blank" href="<?php echo $this->feed->url(); ?>"><?php echo _i('link'); ?></a>
+					<a class="btn" target="_blank" rel="noreferrer" href="<?php echo $this->feed->url(); ?>"><?php echo _i('link'); ?></a>
 				</div>
-				<a class="btn" target="_blank" href="http://validator.w3.org/feed/check.cgi?url=<?php echo $this->feed->url(); ?>"><?php echo _t('sub.feed.validator'); ?></a>
+				<a class="btn" target="_blank" rel="noreferrer" href="http://validator.w3.org/feed/check.cgi?url=<?php echo $this->feed->url(); ?>"><?php echo _t('sub.feed.validator'); ?></a>
 			</div>
 		</div>
 		<div class="form-group">
diff --git a/app/views/helpers/feed/update.phtml b/app/views/helpers/feed/update.phtml
index b7e8f68cd..bf87a255a 100644
--- a/app/views/helpers/feed/update.phtml
+++ b/app/views/helpers/feed/update.phtml
@@ -37,7 +37,7 @@
 			<div class="group-controls">
 				<div class="stick">
 					<input type="text" name="website" id="website" class="extend" value="<?php echo $this->feed->website(); ?>" />
-					<a class="btn" target="_blank" href="<?php echo $this->feed->website(); ?>"><?php echo _i('link'); ?></a>
+					<a class="btn" target="_blank" rel="noreferrer" href="<?php echo $this->feed->website(); ?>"><?php echo _i('link'); ?></a>
 				</div>
 			</div>
 		</div>
@@ -46,10 +46,10 @@
 			<div class="group-controls">
 				<div class="stick">
 					<input type="text" name="url" id="url" class="extend" value="<?php echo $this->feed->url(); ?>" />
-					<a class="btn" target="_blank" href="<?php echo $this->feed->url(); ?>"><?php echo _i('link'); ?></a>
+					<a class="btn" target="_blank" rel="noreferrer" href="<?php echo $this->feed->url(); ?>"><?php echo _i('link'); ?></a>
 				</div>
 
-				<a class="btn" target="_blank" href="http://validator.w3.org/feed/check.cgi?url=<?php echo rawurlencode(htmlspecialchars_decode($this->feed->url(), ENT_QUOTES)); ?>"><?php echo _t('sub.feed.validator'); ?></a>
+				<a class="btn" target="_blank" rel="noreferrer" href="http://validator.w3.org/feed/check.cgi?url=<?php echo rawurlencode(htmlspecialchars_decode($this->feed->url(), ENT_QUOTES)); ?>"><?php echo _t('sub.feed.validator'); ?></a>
 			</div>
 		</div>
 		<div class="form-group">
diff --git a/app/views/helpers/index/normal/entry_bottom.phtml b/app/views/helpers/index/normal/entry_bottom.phtml
index 3af7436c3..a9d5a80ca 100644
--- a/app/views/helpers/index/normal/entry_bottom.phtml
+++ b/app/views/helpers/index/normal/entry_bottom.phtml
@@ -52,7 +52,7 @@
 						$share_options['title'] = $title;
 						$share->update($share_options);
 				?><li class="item share">
-					<a target="_blank" href="<?php echo $share->url(); ?>"><?php echo $share->name(); ?></a>
+					<a target="_blank" rel="noreferrer" href="<?php echo $share->url(); ?>"><?php echo $share->name(); ?></a>
 				</li><?php
 					}
 			?></ul>
@@ -81,6 +81,6 @@
 		?><li class="item date"><?php echo $this->entry->date(); ?></li><?php
 	}
 	if ($bottomline_link) {
-		?><li class="item link"><a target="_blank" href="<?php echo $this->entry->link(); ?>"><?php echo _i('link'); ?></a></li><?php
+		?><li class="item link"><a target="_blank" rel="noreferrer" href="<?php echo $this->entry->link(); ?>"><?php echo _i('link'); ?></a></li><?php
 	} ?>
 </ul>
diff --git a/app/views/helpers/index/normal/entry_header.phtml b/app/views/helpers/index/normal/entry_header.phtml
index dc544298f..86298e59f 100644
--- a/app/views/helpers/index/normal/entry_header.phtml
+++ b/app/views/helpers/index/normal/entry_header.phtml
@@ -27,7 +27,7 @@
 		}
 	}
 	?><li class="item website"><a href="<?php echo _url('index', 'index', 'get', 'f_' . $this->feed->id()); ?>"><img class="favicon" src="<?php echo $this->feed->favicon(); ?>" alt="✇" /> <span><?php echo $this->feed->name(); ?></span></a></li>
-	<li class="item title"><a target="_blank" href="<?php echo $this->entry->link(); ?>"><?php echo $this->entry->title(); ?></a></li>
+	<li class="item title"><a target="_blank" rel="noreferrer" href="<?php echo $this->entry->link(); ?>"><?php echo $this->entry->title(); ?></a></li>
 	<?php if ($topline_date) { ?><li class="item date"><?php echo $this->entry->date(); ?> </li><?php } ?>
-	<?php if ($topline_link) { ?><li class="item link"><a target="_blank" href="<?php echo $this->entry->link(); ?>"><?php echo _i('link'); ?></a></li><?php } ?>
+	<?php if ($topline_link) { ?><li class="item link"><a target="_blank" rel="noreferrer" href="<?php echo $this->entry->link(); ?>"><?php echo _i('link'); ?></a></li><?php } ?>
 </ul>
diff --git a/app/views/index/normal.phtml b/app/views/index/normal.phtml
index 91ebcebd3..6fda11ed9 100644
--- a/app/views/index/normal.phtml
+++ b/app/views/index/normal.phtml
@@ -66,7 +66,7 @@ if (!empty($this->entries)) {
 
 		?><div class="flux_content">
 			<div class="content <?php echo $content_width; ?>">
-				<h1 class="title"><a target="_blank" href="<?php echo $this->entry->link(); ?>"><?php echo $this->entry->title(); ?></a></h1>
+				<h1 class="title"><a target="_blank" rel="noreferrer" href="<?php echo $this->entry->link(); ?>"><?php echo $this->entry->title(); ?></a></h1>
 				<?php
 					$author = $this->entry->author();
 					echo $author != '' ? '<div class="author">' . _t('gen.short.by_author', $author) . '</div>' : '',
diff --git a/p/scripts/main.js b/p/scripts/main.js
index 8980fe2f6..74631451a 100644
--- a/p/scripts/main.js
+++ b/p/scripts/main.js
@@ -752,7 +752,7 @@ function init_stream(divStream) {
 	});
 
 	divStream.on('click', '.flux .content a', function () {
-		$(this).attr('target', '_blank');
+		$(this).attr('target', '_blank').attr('rel', 'noreferrer');
 	});
 
 	if (context.auto_mark_site) {