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Type Vulnerability

Collabora · Code execution

Collabora Online – Built-in CODE Server OS Command Injection Vulnerability

3 sourcesCVE-2026-110447

At a glance

High
24-hour window, from the last update
ActiveConfirmed in-the-wild exploitation
Evidence-weighted, not popularity
Signal

Actively exploited in the wild — prioritise confirming exposure.

Why High

High rather than Critical: exposure is scored at a default because we cannot see your systems or suppliers. If you run or depend on Collabora Online - Built-in Code Server, treat it as Critical.

Briefing

There is no written leader briefing for this story yet. These questions come from the facts we hold.

Questions to ask IT

  • Do we run Collabora Online - Built-in Code Server and Collabora Online – Built-in CODE Server, and is every instance on version 26.4.303 or later?
  • Is any of it reachable from the internet?
  • Have we checked whether it has already been used against us?
  • If it is not yet patched, what mitigation is in place, and will the fix be done by 12 Nov?

Next steps

  1. Confirm exposure and remediation status for affected products

Summary

  • CISA has added one new vulnerability to its known-exploited catalogue, based on evidence of active exploitation.
  • CVE-2026-110447 is confirmed as exploited in the wild (US known-exploited catalogue)
  • CVE-2026-110447 has an estimated ~73.3% chance of attack in 30 days (99.5th percentile) as of 2026-11-02 — probability signal, not confirmed exploitation
  • Authoritative catalogues report active exploitation of this vulnerability.

Read the original reportBleepingComputer(opens in a new tab)

Products and services involved

Same event, different frames

Distinct often headline the same incident differently.

Pulse

Last checked 58m ago · Next recheck 12 Nov 2026, 09:32 UK time

Update
11 Nov 2026, 09:32 UK time · 58m ago

held at 73.3%; ranking metadata was updated.

Listed on the — prioritise confirming exposure and patching.

EscalationDe-escalationCritical / liveWhat these mean
Drag to pan · Ctrl / ⌘ + scroll or pinch to zoom6 events

2 quiet checks hidden.

Sources

How we know

Statements extracted from sources. Higher confidence means stronger corroboration.

  • ClaimedHeadline60% confidence

    Collabora Online – Built-in CODE Server OS Command Injection Vulnerability

  • ProbableSummary fact75% confidence

    CISA has added one new vulnerability to its known-exploited catalogue, based on evidence of active exploitation.

  • ConfirmedCVE identifier95% confidence

    Event involves CVE-2026-110447

  • ConfirmedKnown-exploited catalogue98% confidence

    CVE-2026-110447 is confirmed as exploited in the wild (US known-exploited catalogue)

  • ConfirmedEstimated attack likelihood95% confidence

    CVE-2026-110447 has an estimated ~73.3% chance of attack in 30 days (99.5th percentile) as of 2026-11-02 — probability signal, not confirmed exploitation