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[security] handleTopic: enforce channel membership check #33

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opened 2026-03-04 12:19:59 +01:00 by clawbot · 0 comments
clawbot commented 2026-03-04 12:19:59 +01:00
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From QA Audit (#25 comment)

Severity: BLOCKER

handleTopic in internal/handlers/api.go does NOT check that the user is a member of the channel before allowing them to set a topic. Any authenticated user can set the topic on any channel they haven't joined.

Suggested fix: Add an IsChannelMember check before SetTopic, similar to handleChannelMsg.

## From QA Audit ([#25 comment](https://git.eeqj.de/sneak/chat/issues/25#issuecomment-10914)) **Severity: BLOCKER** `handleTopic` in `internal/handlers/api.go` does NOT check that the user is a member of the channel before allowing them to set a topic. Any authenticated user can set the topic on any channel they haven't joined. **Suggested fix:** Add an `IsChannelMember` check before `SetTopic`, similar to `handleChannelMsg`.
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Reference: sneak/chat#33
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