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Comments on No. 19 of 124 · heise online English · edition of Tuesday 27 October 2026

Attacks on Arista VeloCloud and Collabora/Nextcloud observed

Summary

CISA has added two actively exploited flaws to its known-exploited list: a SQL injection in Arista VeloCloud Orchestrator On-Premise, fixed in 5.2.3.18, 6.1.3.10 and 6.4.2.12, and an unauthenticated command injection in the Collabora Online Built-in CODE Server for Nextcloud, fixed in 26.4.303. Disabling the Nextcloud app does not mitigate the Collabora flaw, and the fixed app needs Nextcloud 30 or later. Issue-tracker reports of web shells suggest attacks since mid-September, though that is unverified. Until VCO is patched, restrict access and block the IPs Arista published.

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