CVE-2021-29442
Authentication bypass
- Published
- Apr 27, 2021
- Updated
- Aug 3, 2024
- Assigning CNA
- GitHub_M
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:NHigh · next 30 days
- Percentile
- 99.3%
- Model date
- Oct 17, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, the ConfigOpsController lets the user perform management operations like querying the database or even wiping it out. While the /data/remove endpoint is properly protected with the @Secured annotation, the /derby endpoint is not protected and can be openly accessed by unauthenticated users. These endpoints are only valid when using embedded storage (derby DB) so this issue should not affect those installations using external storage (e.g. mysql)
Sources
nacos/CVE-2021-29442
Alibaba Nacos Authentication Bypass and Remote Code Execution (CVE-2021-29442)
Vulhub vulnerability labsDeclared conditions
- lab image version: vulhub/nacos:1.4.0(nacos/CVE-2021-29442/docker-compose.yml:services.web.image)
http/cves/2021/CVE-2021-29442.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: regex,status,word($.matchers[*].type)
Responsible use
Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.