(May 2026)

TL;DR:

• an email address like atouch${IFS}/tmp/savane-rce-proof@attacker.example gave any registered user code execution on its backend.
• From there, we made our account a superuser,
• impersonated Bash’s maintainer, and confirmed we could add an SSH key with push access to the upstream Bash repository.
• An unpatched kernel gave us root access and access to a GNU backup server. We reported it to the FSF on May 11, 2026.

FSF incident report: https://static.fsf.org/nosvn/security/savannah-20260807.pdf