Shannon: Tightening Input Validation and Config Security
Three small fixes harden untrusted input handling and secret storage. The shared pattern is fail-fast validation at the boundary and enforcing private permissions on every config write.
Duration: PT2M11S
Episode overview
This episode is a short developer briefing from Shannon.
It explains recent repository work in plain language.
- Show: Shannon
- Published: 2026-10-24T06:04:20Z
- Audio duration: PT2M11S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, it's Saturday, October 24th, 2026.
Today's takeaway is a focused security hardening sweep. Three small fixes tighten how the command line handles untrusted input and stored secrets before they reach sensitive systems.
First theme is validating inputs at the boundary, where rejection is cheapest. In pull request 498, the start command now only accepts web targets using H T T P and H T T P S. Previously, any string the URL parser accepted, including file scheme addresses, would pass through to the worker and scanning agent. That is…
Second theme is protecting credentials on disk. Pull request 497 enforces owner-only permissions on every rewrite of the configuration file. The save routine requested private permissions, but that setting only applied when the file was created. Rewriting an existing file with looser permissions left the stored A P…
What's next: expect stricter, earlier errors. Automation passing non-web targets or workspace names with slashes will now fail fast, and existing loose configuration files will be corrected on next save. No migration is required, but update any tests that rely on permissive inputs.
That's all for today, thanks for listening.