Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.277 ·

New slash-command relay refusal path for unverified Slack turns

Slash commands from unverified Slack messages can now be blocked before relaying

TierYou'll noticehow much it should matter to you
Useful2my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaElsewherewhat it touches
KindImprovementsin v2.1.277,
You'll notice

Slash commands from unverified Slack messages can now be blocked before relaying

What

When a message coming through Slack looks like a slash command but didn't go through the existing bridge-slash-override handling and isn't confirmed to be from a verified human Slack user, a new check called resolveRelaySlashRefusal now runs and can block the message from being relayed.

Why

This closes a gap where an unverified Slack message could otherwise trigger a slash command, adding a safeguard against unauthorized or spoofed command execution through Slack integrations.

See this entry in the whole of v2.1.277 →