ColdFusion 10.0  -  Bug 3689049

Created on Saturday, January 4, 2014

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serializeJson() escaped fwd slashes


See &

This applies to CF as well. Repo:

st = {"link" = "/example/example1"};
json1 = serializeJSON(st);

writedump(json1); // {"link":"\/example\/example1"}

CF should not be escaping fwd slashes: there's no need to. It should just stick to the JSON spec.

I've marked this as affecting CF10, but it effects CF9.


Test Configuration

My Hardware and Environment details:

App Language(s) English
OS Language(s) English
Platform(s) Platforms All

Notes (6)

  • Adam Cameron

    1:45:43 PM GMT+00:00 Oct 14, 2014

    Confirmed this is fixed in 10,0,14,291717. Cheers.

  • Awdhesh Kumar

    4:45:40 AM GMT+00:00 Mar 5, 2014

    In place of forward slash, backward slash will being skipped. Corrected..

  • Adam Cameron

    12:29:51 AM GMT+00:00 Feb 11, 2014

    Because there's no requirement to. Turn the question around: why *would you* escape them if it's not necessary?


  • Awdhesh Kumar

    9:43:20 PM GMT+00:00 Feb 9, 2014

    I don'y get why shouldn't we escape forward slashes. Anyway I made the required changes..

  • Adam Cameron

    2:35:31 AM GMT+00:00 Jan 29, 2014

    Yeah... you're misreading the RFC and the diagram on the JSON site, because they absolutely do NOT say that. Did you actually bother to read the links I gave you? Because we go through it all in there. You didn't did you? No. Did you think I posted them there to simply pass the time, or do you think I posted them there because they were important information relating to this ticket? Which was it likely to be?

    Even if you ignored the info I provided, had you bothered to do any investigation of this then you'd've quickly realised you are simply misreading the information in front of you.

    Go to and test validating this string: {"/": "/"}

    Indeed try to test with THIS string: {"\/": "\/"}. Note what jsonlint does? Gets rid of the unnecessary escaping.

    Then go into your console on your browser, and do this:
    o = JSON.parse('{"/": "/"}');

    Sorry to sound slightly contemptuous of your efforts here... it's because I *am* contemptuous of them.


  • Awdhesh Kumar

    2:19:15 AM GMT+00:00 Jan 29, 2014

    As per the JSON spec, forward slash should be escaped. Let me know if I am missing something.. and (page: 5).

Duplicate ID
Reported By Adam Cameron


State Closed
Status Fixed


Priority 3-High
Frequency Most users will encounter
Failure Type Incorrectly Functioning
Product Area AJAX


Found In Build Final
Fixed In Build CF10_Update14

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