| Package | Affected versions | Patched versions |
|---|---|---|
| monal | < 4.9 | 4.9 |
Monal before 4.9 does not implement proper sender verification on MAM and Message Carbon (XEP-0280) results. This allows a remote attacker (able to send stanzas to a victim) to inject arbitrary messages into the local history, with full control over the sender and receiver displayed to the victim.
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