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VulnerabilityPublished

CVE-2026-84473: Kiteworks ownCloud · Improper Restriction of Excessive Authentication Attempts

Affects Kiteworks ownCloudSource CVE Database V5

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Not known to be exploited : upgrade to 11.1.0 soon.

Data as of 6 Nov 2026, 18:35 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 11.1.0

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade Kiteworks ownCloud to 11.1.0.

Affected software

ProductAffectedFixed in
KiteworksownCloudAffected
  • >=10.16.3 <11.1.0
Fixed in
  • 11.1.0

AI-suggested

Upgrade affected ownCloud server installations to version 11.1.0 or later, where this vulnerability has been fixed. No other mitigation or temporary workaround is indicated in the available data.

Description

CVE-2026-84473 is an authentication bypass vulnerability in Kiteworks ownCloud server versions 10.16.3 up to but not including 11.1.0. It allows unauthenticated remote attackers to perform unlimited online password guessing attacks against WebDAV accounts by repeatedly sending HTTP Basic Authentication requests to the WebDAV endpoint. This vulnerability is due to improper restriction of excessive authentication attempts, lacking brute-force protection.

References

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