Home/CVE/Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 22.2.
CVE

CVE-2022-29243

Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 22.2.

Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 22.2.7 and 23.0.4, missing input-size validation of new session names allows users to create app passwords with long names. These long names are then loaded into memory on usage, resulting in impacted performance.

Versions 22.2.7 and 23.0.4 contain a fix for this issue. There are currently no known workarounds available.

MEDIUM · CVSS 4.3 EPSS 0.0087
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

2
nextcloud server< 22.2.7
nextcloud server> 23.0.0 and < 23.0.4
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD31 May 2022 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-7cwm-qph5-4h5wThird Party Advisory
https://github.com/nextcloud/server/pull/31658PatchThird Party Advisory
https://hackerone.com/reports/1153138Third Party Advisory
https://security.gentoo.org/glsa/202208-17Third Party Advisory
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