From: Eric Wong <e@80x24.org>
Date: Fri, 10 Jun 2016 07:23:24 +0000 (+0000)
Subject: unsubscribe: HTML encode undecryptable username
X-Git-Tag: v1.0.0~456
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=f4ef1160ffd83d7cc1744c06392888f6af50faa7;p=public-inbox.git

unsubscribe: HTML encode undecryptable username

Otherwise, URLs can be crafted to inject HTML.
---

diff --git a/lib/PublicInbox/Unsubscribe.pm b/lib/PublicInbox/Unsubscribe.pm
index 95348ea3..239feea9 100644
--- a/lib/PublicInbox/Unsubscribe.pm
+++ b/lib/PublicInbox/Unsubscribe.pm
@@ -82,6 +82,7 @@ sub _user_list_addr {
 		my $errors = $env->{'psgi.errors'};
 		$errors->print("error decrypting: $u\n");
 		$errors->print("$_\n") for split("\n", $err);
+		$u = Plack::Util::encode_html($u);
 		return r($self, 400, 'Bad request', "Failed to decrypt: $u");
 	}