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Vulnerability record · CVE-2020-19676 · published 30 September 2020

CVE-2020-19676: Alibaba nacos vulnerability

Alibaba · Nacos

Nacos 1.1.4 is affected by: Incorrect Access Control. An environment can be set up locally to get the service details interface. Then other Nacos service names can be accessed through the service list interface. Service details can then be accessed when not logged in. (detail:https://github.com/alibaba/nacos/issues/2284)

5.3 CVSS 3.1 Medium EPSS 1.4% · top 28.2%
5.3CVSS 3.1 base score, v2 5.0
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Nacos 1.1.4 is affected by: Incorrect Access Control. An environment can be set up locally to get the service details interface. Then other Nacos service names can be accessed through the service list interface. Service details can then be accessed when not logged in. (detail:https://github.com/alibaba/nacos/issues/2284)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/alibaba/nacos/issues/2284 ExploitIssue TrackingThird Party Advisory
https://github.com/alibaba/nacos/issues/2284 ExploitIssue TrackingThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-29441Nacos AuthFilter authentication bypass via spoofed User-AgentNacos before 1.4.1 contains a backdoor in the AuthFilter servlet filter that lets requests bypass authentication checks when authentication is enable…EPSS 83%analysed8.8CVE-2021-43116Alibaba nacos improper authentication vulnerabilityAn Access Control vulnerability exists in Nacos 2.0.3 in the access prompt page; enter username and password, click on login to capture packets and t…EPSS 7.5%7.5CVE-2021-29442Nacos ConfigOpsController derby endpoint missing authenticationIn Nacos before 1.4.1, the ConfigOpsController exposes a /derby endpoint that lacks the @Secured annotation applied to /data/remove, allowing unauthe…EPSS 66%analysed6.1CVE-2021-44667Alibaba nacos cross-site scripting vulnerabilityA Cross Site Scripting (XSS) vulnerability exists in Nacos 2.0.3 in auth/users via the (1) pageSize and (2) pageNo parameters.EPSS 0.83%

Source: NIST National Vulnerability Database (record CVE-2020-19676), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.