#Pleroma Security Release 2.5.4

Fix XML External Entity (XXE) loading vulnerability allowing to fetch arbitrary files from the server's filesystem.

https://pleroma.social/announcements/2023/08/05/pleroma-security-release-2.5.4/

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Hello friends, I invite you to check this blog post that I found after receiving the report:

https://vuln.be/post/xxe-in-erlang-and-elixir/

Apparently the bundled Erlang XML library xmerl along with a few other Erlang/Elixir XML parsers are vulnerable by default and we had no clue.

At least we are now in the same company as Postgres who also has this vulnerability in 2012 🥲

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3489