CVE-2020-8223
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I. Basic Information for CVE-2020-8223
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权管理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nextcloud 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud Server 19.0.0存在安全漏洞，该漏洞源于一个逻辑错误导致特权升级，允许恶意用户重新共享比他们自己获得的更高权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | Nextcloud Server | Fixed in 19.0.1 | - |
II. Public POCs for CVE-2020-8223
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://nextcloud.com/security/advisory/?id=NC-SA-2020-029x_refsource_MISC
- https://hackerone.com/reports/889243x_refsource_MISC
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T7FX3O6SJE2S52I2HAA4DSTUIISP5BNA/vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2020-8223
Same Patch Batch · n/a · 2020-10-05 · 16 CVEs total
| CVE-2020-7709 | 6.0 MEDIUM | Prototype Pollution |
| CVE-2020-24231 | JumpMind Symmetric DS 安全漏洞 | |
| CVE-2020-6875 | ZTE zxone 安全漏洞 | |
| CVE-2020-26048 | CuppaCMS 代码问题漏洞 | |
| CVE-2020-0571 | Intel BIOS 信息泄露漏洞 | |
| CVE-2019-14556 | Intel(R) Core(TM)和Intel(R) Celeron(R) 安全漏洞 | |
| CVE-2020-8671 | Intel 安全漏洞 | |
| CVE-2019-14558 | EDK2 安全漏洞 | |
| CVE-2020-12302 | Intel Driver & Support Assistant 安全漏洞 | |
| CVE-2019-14557 | Intel 安全漏洞 | |
| CVE-2020-26061 | ClickStudios Passwordstate 授权问题漏洞 | |
| CVE-2020-8182 | Nextcloud 访问控制错误漏洞 | |
| CVE-2020-8235 | Nextcloud 安全漏洞 | |
| CVE-2020-8228 | Nextcloud Preferred Providers app 安全漏洞 | |
| CVE-2020-26166 | qdPM 跨站脚本漏洞 |
IV. Related Vulnerabilities
Same vendor: n/a
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Open5GS SMF ogs_nas_parse_qos_rules denial of service - CVE-2026-8269
Open5GS SMF smf_nsmf_handle_create_sm_context denial of serv - CVE-2026-8268
Open5GS SMF OpenAPI_list_create denial of service
Same weakness: CWE-269
- CVE-2026-42562
Plainpad: Privilege Escalation via Writable Admin Field in P - CVE-2026-41163
bubblewrap vulnerable to privilege escalation in setuid mode - CVE-2026-44987
SysReptor: Privilege Escalation from User Admin to Superuser - CVE-2026-42185
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V. Comments for CVE-2020-8223
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