[Bug 8358] A HREF with "about:" prefix breaks URI check

[email protected] Sat, 29 Nov 2025 01:05:27 +0000

Newsgroups	gmane.mail.spam.spamassassin.devel
Message-ID	<[email protected]/SpamAssassin/>

https://bz.apache.org/SpamAssassin/show_bug.cgi?id=8358

John Hardin <[email protected]> changed:

           What    |Removed                     |Added
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--- Comment #2 from John Hardin <[email protected]> ---
(In reply to Kent Oyer from comment #1)
> Is this pattern ever seen in ham? Will any browsers actually open a URL like
> this? Maybe you could write a rule like this:
> 
> uri    ABOUT_SCHEME_INVALID   /^about:http/i
> score  ABOUT_SCHEME_INVALID   0.001
> 
> Then increase the score if it doesn't cause FPs

In for evaluation:

uri   __URI_ABOUT_OBFU       m;^about:https?://;i

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