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paulbalandan merged 2 commits into from
Oct 12, 2026
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docs: document CSRF in JSON request body limitations #10619

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fix: preserve JSON body formatting when removing CSRF token
gr8man Oct 10, 2026
f831fad
docs: document CSRF in JSON request body limitations
gr8man Oct 11, 2026
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7 changes: 7 additions & 0 deletions user_guide_src/source/libraries/security.rst
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Expand Up @@ -224,6 +224,13 @@ The order of checking the availability of the CSRF token is as follows:

.. note:: ``php://input`` (raw body) is checked since v4.4.2.

.. note::

If you include the CSRF token in a JSON object, removing it decodes and
re-encodes the body. This changes its formatting and may affect number
precision. To keep the JSON body unchanged, send the token in the
``X-CSRF-TOKEN`` header and leave the CSRF field out of the body.

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