Could it have something to do with the extensive use in JSPWiki of
"application/x-www-form-urlencoded"
rather than "multipart/form-data"?

https://stackoverflow.com/questions/4007969/application-x-www-form-urlencoded-or-multipart-form-data
suggests that it can handle more cases (like longer payloads or binary
data, although that would not seem to be the issue here),

On Sun, Feb 25, 2024 at 9:00 PM Ulf Dittmer <ulf.ditt...@googlemail.com>
wrote:

> Sorry, that message got truncated:
>
> It's shared hosting, and I have no access to the Apache - so I don't know.
>
> I can (and will) contact the admins, but I figured it was worth a shot
> asking if anyone had encountered an issue like this before.
>
> It's got something to do with the parameter, because this works fine (even
> though it's nonsensical from a JSPWiki standpoint):
>
> |[{Image}]
>
> [{Image src='
> https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png'
> }]
>
>  But two or more Image calls with the src parameter cause the issue. I'm
> clueless what Apache might find objectionable about it.
>
>
> On Sun, Feb 25, 2024 at 10:33 AM Juan Pablo Santos Rodríguez <
>> juanpablo.san...@gmail.com> wrote:
>>
>>> Hi Ulf,
>>>
>>> Would you mind sharing how your Apache instance is set up? Does it show
>>> to
>>> which URL is trying to access the second time?
>>>
>>>
>>> Thx in advance,
>>> juan pablo
>>>
>>> El sáb, 24 feb 2024, 18:23, Ulf Dittmer <ulf.ditt...@googlemail.com
>>> .invalid>
>>> escribió:
>>>
>>> > Hi all-
>>> >
>>> > I'm experiencing a strange problem, and was hoping someone might have
>>> run
>>> > into this before.
>>> >
>>> > I'm running a JSPWiki site on Tomcat with an Apache in front of it. The
>>> > Apache refuses an edit of a very simple page with a "Forbidden - You
>>> don't
>>> > have permission to access this resource.", namely for a page with just
>>> > these two lines:
>>> >
>>> > [{Image src='
>>> >
>>> >
>>> https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png
>>> > '
>>> > }]
>>> >
>>> > [{Image src='
>>> >
>>> >
>>> https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png
>>> > '
>>> > }]
>>> >
>>> > (This is a minimized proof of concept of the behavior).
>>> >
>>> > With just one Image invocation, there's no problem. Running on a local
>>> > machine without an Apache in front of it, there's no problem with as
>>> many
>>> > Image elements as I want. The issue also happens if the Image
>>> references an
>>> > attachment on that page.
>>> >
>>> > Has anyone seen anything like this? Or know why Apache might find this
>>> > offensive?
>>> >
>>> > Thanks for any clues.
>>> >
>>> > Ulf
>>> >
>>>
>>

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