CVE-2021-29441
- Source
- https://cve.org/CVERecord?id=CVE-2021-29441
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29441.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-29441
- Aliases
- Published
- 2021-04-27T21:15:07.993Z
- Modified
- 2026-07-09T12:33:12.090903Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, when configured to use authentication (-Dnacos.core.auth.enabled=true) Nacos uses the AuthFilter servlet filter to enforce authentication. This filter has a backdoor that enables Nacos servers to bypass this filter and therefore skip authentication checks. This mechanism relies on the user-agent HTTP header so it can be easily spoofed. This issue may allow any user to carry out any administrative tasks on the Nacos server.
- References
Affected packages
Git / github.com/alibaba/nacos
Affected ranges
- Type
- GIT
- Repo
- https://github.com/alibaba/nacos
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "cpe": "cpe:2.3:a:alibaba:nacos:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "1.4.1" } ], "source": "CPE_RANGE" }