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Verification
VERIFIEDConfidence: HIGH
Source identified
Claims cross-referenced
No discrepancies found
Fact-check summary

CVE-2026-110447 details and in-the-wild exploitation are corroborated by NVD, Censys, SentinelOne, and multiple security outlets from mid-October 2026, but no reports confirm CISA KEV addition on Oct 23.

2 caveats
  • ▲Prior reports through Oct 18 explicitly state the CVE was not yet in CISA KEV as of those dates; no corroboration found for an Oct 23 addition.
  • ▲Primary catalog/advisory entry; independent outlet coverage may still be catching up.
Sourcing
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via CISA KEV

CISA KEV · track record
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Home/Tech/CISA adds Collabora Online command injection flaw to exploited list
VERIFIEDBy Xavier Rivera·Friday, October 23, 2026 at 4:13 PM EDT·1 min read

CISA adds Collabora Online command injection flaw to exploited list

CISA added CVE-2026-110447, an OS command injection flaw in Collabora Online's built-in CODE server used within Nextcloud, to its Known Exploited Vulnerabilities catalog on October 23. It allows remote code execution; federal agencies must mitigate by October 26 under BOD 26-04.

Source:CISA KEV
Post
CISA adds Collabora Online command injection flaw to exploited list
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TL;DRAI · 60 sec read

CISA added CVE-2026-110447 to its Known Exploited Vulnerabilities catalog on October 23, 2026. The flaw is an OS command injection in Collabora Online’s built-in CODE Server within Nextcloud that allows remote code execution when the server is not running. Attackers are actively exploiting it, and CISA set a mitigation deadline of October 26, 2026.

CISA added CVE-2026-110447 to its Known Exploited Vulnerabilities catalog on October 23, 2026.
Attackers are actively exploiting the issue.
Collabora Online's built-in CODE server has an OS command injection flaw. The vulnerability affects the built-in CODE server when it is used within the Nextcloud platform, and it allows remote code execution when the CODE server isn't running.
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CISA has evidence of exploitation. Listing in the KEV catalog means the agency has evidence the flaw is being exploited. Whether it has been used in ransomware campaigns is listed as unknown. The mitigation deadline is October 26, 2026, and forensic triage is required.

CISA tells organizations to apply vendor mitigations. Under BOD 26-04, organizations should follow vendor instructions, assess each asset's internet exposure, and stop using the product if mitigations are unavailable.
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References. The entry links to Nextcloud's forum post urging built-in CODE users to update, GitHub advisory GHSA-g3vx-3m76-fghh, and CISA's BOD 26-04 guidance.
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