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fix: html encode backslashes if used with escape filter or autoescape #1437

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merged 1 commit into from
Apr 12, 2023
Merged

fix: html encode backslashes if used with escape filter or autoescape #1437

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7 changes: 7 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,6 +1,13 @@
Changelog
=========

3.2.4 (unreleased)
------------------

* HTML encode backslashes when expressions are passed through the escape
filter (including when this is done automatically with autoescape). Merge
of [#1427](https://github.com/mozilla/nunjucks/pull/1427).

3.2.3 (Feb 15 2021)
-------------------

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5 changes: 3 additions & 2 deletions nunjucks/src/lib.js
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Expand Up @@ -8,10 +8,11 @@ var escapeMap = {
'"': '"',
'\'': ''',
'<': '&lt;',
'>': '&gt;'
'>': '&gt;',
'\\': '&#92;',
};

var escapeRegex = /[&"'<>]/g;
var escapeRegex = /[&"'<>\\]/g;

var exports = module.exports = {};

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12 changes: 11 additions & 1 deletion tests/compiler.js
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Expand Up @@ -1976,6 +1976,16 @@
finish(done);
});

it('should autoescape backslashes', function(done) {
equal(
'{{ foo }}',
{ foo: 'foo \\\' bar' },
{ autoescape: true },
'foo &#92;&#39; bar');

finish(done);
});

it('should not autoescape when extension set false', function(done) {
function TestExtension() {
// jshint validthis: true
Expand Down Expand Up @@ -2031,7 +2041,7 @@
});

it('should render regexs', function(done) {
equal('{{ r/name [0-9] \\// }}',
equal('{{ r/name [0-9] \\// }}', {}, { autoescape: false },
'/name [0-9] \\//');

equal('{{ r/x/gi }}',
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4 changes: 2 additions & 2 deletions tests/filters.js
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Expand Up @@ -108,9 +108,9 @@

it('escape', function() {
equal(
'{{ "<html>" | escape }}', {},
'{{ "<html>\\\\" | escape }}', {},
{ autoescape: false },
'&lt;html&gt;');
'&lt;html&gt;&#92;');
});

it('escape skip safe', function() {
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