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BREW-openclaw-cli-CVE-2026-33576 — OpenClaw: Zalo channel downloads media before sender authorization

Affected: Homebrew: openclaw-cli

## Summary

The Zalo image path fetched and stored inbound media before the DM/pairing authorization checks ran.

## Impact

Unauthorized senders could force network fetches and disk writes in the inbound media store even when the message itself was rejected.

## Affected Component

`extensions/zalo/src/monitor.ts`

## Fixed Versions

- Affected: `<= 2026.3.24` - Patched: `>= 2026.3.28` - Latest stable `2026.3.28` contains the fix.

## Fix

Fixed by commit `68ceaf7a5f` (`zalo: gate image downloads before DM auth`).

OpenClaw thanks @AntAISecurityLab for reporting.

cnvd-2026-17895

EUVD-2026-374797

fkie_cve-2026-33576

OpenClaw before 2026.3.28 downloads and stores inbound media from Zalo channels before validating sender authorization. Unauthorized senders can force network fetches and disk writes to the media store by sending messages that are subsequently rejected.

GHSA-v2v2-f783-358j — OpenClaw: Zalo channel downloads media before sender authorization

Affected: npm: openclaw