Page generated: 06 Nov 2026, 03:49 UTC
← Dashboard

CVE-2026-110447

Collabora Online Built-in CODE Server before 26.4.303 (richdocumentscode), a Nextcloud app, allows remote code execution, as exploited in the wild in September and October 2026, a different vulnerability than CVE-2025-66208. This is an OS command injection in proxy.php when the C…

Read full description
Collabora Online Built-in CODE Server before 26.4.303 (richdocumentscode), a Nextcloud app, allows remote code execution, as exploited in the wild in September and October 2026, a different vulnerability than CVE-2025-66208. This is an OS command injection in proxy.php when the CODE server isn't running (e.g., the product was recently restarted). The vulnerability is not present in standalone Collabora Online servers; only this deployment with CODE Server is affected.
CVSS 9.2 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
4.2/10
REALITY · THREAT PRIORITY
8.7/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.2: +1.38
  • Fresh EPSS: 73.31%: +0.37

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 11 documents and public datasets.

Hype components

Headline sample (25%)
50/100
Press, 30 days (60%)
50/100
Grounded branding (15%)
0/100
HYPE TOTAL42/100

Sources and documents

NeoTeo
Press · 30 Oct 2026, 16:51 · Arista and Nextcloud vulnerabilities: fixes and scope - NeoTeo
NeoTeo
Press · 25 Oct 2026, 12:23 · Nextcloud Collabora Flaw Added to CISA’s KEV Catalog - NeoTeo
Rescana
Press · 24 Oct 2026, 16:00 · Collabora Online Built-in CODE Server for Nextcloud (CVE-2026-110447): Exploited Flaw Added to CISA KEV, Upgrade or Remove the App - Rescana
The Hacker News
Press · 24 Oct 2026, 06:25 · CISA Flags Two Actively Exploited Critical Flaws in Collabora Online and Arista VeloCloud - The Hacker News
https://tech-insider.org/
Press · 18 Oct 2026, 07:00 · Nextcloud Vulnerability CVE-2026-110447: CVSS 9.2 [2026] - https://tech-insider.org/
See all 11 source documents
CyberSecurityNews
Press · 17 Oct 2026, 07:00 · Hackers Exploit Critical Collabora Online Flaw to Backdoor Nextcloud Servers - CyberSecurityNews
BleepingComputer
Press · 15 Oct 2026, 07:00 · Hackers exploit Collabora RCE flaw to backdoor Nextcloud servers - BleepingComputer
Pasquale Pillitteri
Press · 15 Oct 2026, 07:00 · Nextcloud flaw in Collabora CODE app exploited to plant PHP web shells - Pasquale Pillitteri
NeoTeo
Press · 14 Oct 2026, 07:00 · Nextcloud Collabora vulnerability: the required fix - NeoTeo
The Hacker News
Press · 14 Oct 2026, 07:00 · Hackers Backdoor Nextcloud Servers Through Critical Flaw in Collabora’s Built-in CODE App - The Hacker News
shattered.io
Press · 03 Sep 2026, 07:00 · Nextcloud Collabora Flaw CVE-2026-110447 Hits CISA KEV - shattered.io

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 4.2 · reality 8.7 (2026-11-02 15:14). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

See 1 repos with metrics
RepositoryStarsForksLanguageUpdated
CyRouteWolf/cve-2026-110447-poc20Go29 Oct 2026, 12:41
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.2; EPSS 73.3%
Attention, last 30 days
10 distinct story titles; 10 press documents; 1 publisher domains.
Technical potential
network access, no prior privileges, no user interaction, additional attack conditions.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:59:53.577903+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
03 Sep 2026, 07:00
Published
14 Oct 2026, 02:27
Added to the CISA KEV catalog
23 Oct 2026, 00:00
Latest press mention
30 Oct 2026, 16:51
Score calculated
05 Nov 2026, 13:59
PoCs on GitHub
1 repositories