CVE-2026-33576
OpenClaw: Zalo channel downloads media before sender authorization
Description
## 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.
How to fix CVE-2026-33576
To remediate CVE-2026-33576, upgrade the affected package to a fixed version below.
- —upgrade to 2026.3.28 or later
Is CVE-2026-33576 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2026.3.28
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |