I'm also planning to attend CoC Glasgow and would love to join the
hackathon, time/talks permitting!

A few more of us (from Amazon customer facing product search team, using
Lucene to search all of Amazon's fast-changing catalog) are hoping/planning
to come too...

Mike McCandless

http://blog.mikemccandless.com

On Thu, Aug 20, 2026 at 5:36 AM Uwe Schindler via dev <[email protected]>
wrote:

> Hi,
>
> I will also be there. I'd like to discuss a bit about a SECURITY.md in our
> repository and some ideas what we should treat as security vulnerability
> and what not. Not only about idex files and possibly missing checks in
> public APIs. Also with regards to XML queryparser, serialization and so on
> - although those are mot of the cases security related and should be fixed.
>
> The reason why I am bringing that up: We recently got many - and rejected
> security issues from people forcefully flipping specific bits and bytes in
> a Lucene index file (and also fixing the checksum) and later said: "Theres
> a DOS attack because of an infinite loop while reading that file." We all
> know that we often cannot do checks at every possibly entry point and our
> code trusts that the index/codec file format is sane. Of course we can
> improve that, but only without affecting performance. Therefore I'd like to
> mock up a SECUIRTY.md file for the Lucene repo where we clearly say that an
> index file must be coming from a trusted location and unauthorized
> modifications on index files should be prevented by the downstream
> application (like Elasticsearch/Solr doing a full cryptographic handshake
> when transferring files over the network).
>
> I'd like to discuss and maybe hack a bit. So your inviation is great! And
> some (many) beers are important, too!
>
> Uwe
> Am 19.08.2026 um 06:08 schrieb Sagar Upadhyay:
>
> Hello,
>
> I am also coming to CoC Glasgow for a talk and would be really interested
> in this!
>
> ~ Sagar
>
> On Tue, Aug 18, 2026, 7:27 AM Alan Woodward <[email protected]> wrote:
>
>> Hi everyone,
>>
>> I’ve just signed up for CoC in Glasgow this October, and I see that there
>> is already a proposal for a Solr hackathon on the Monday.  Would anybody be
>> interested in a parallel Lucene group as well?  In the past these have been
>> fun opportunities to meet up with other committers and contributors and to
>> brainstorm  future ideas as well as work together on bug fixes and new
>> features.  If enough people think it’s worth it I can try and set something
>> up.
>>
>> - Alan
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> Uwe SchindlerAchterdiek 19, D-28357 Bremen 
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> eMail: [email protected]
>
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