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TI-2021-19162 Aliases CVE-2021-43116GHSA-2g86-r6w2-wqqr

An Access Control vulnerability exists in Nacos 2.0.3 in the access prompt page; enter…

Priority MEDIUM 48CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

An 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 then change the returned package, which lets a malicious user login.

Why it matters now

EPSS 0.07464 94th percentileScored 2026-11-08
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—com.alibaba.nacos:nacos-client (Maven)up to 2.0.3—No fix listedGHSA-2g86-r6w2-wqqr
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • com.alibaba.nacos:nacos-client (Maven) Vendor— Affected up to 2.0.3 Fixed in — No fix listed GHSA-2g86-r6w2-wqqr

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:alibaba:nacos:*:*:*:*:*:*:*:*up to 2.0.3VulnerableAlibaba
  • cpe:2.3:a:alibaba:nacos:*:*:*:*:*:*:*:* Versions up to 2.0.3 Vulnerable ·Alibaba

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-43116
  2. 2026-10-03 Alias added: GHSA-2g86-r6w2-wqqr

References

Exploit 2

Advisory 1

Other 2

  • TI-2021-10154 Authentication bypass in Alibaba nacos CVSS 3.1CRITICAL 9.8
  • TI-2021-10155 Authentication bypass in Alibaba nacos CVSS 3.1HIGH 8.6
  • TI-2021-20198 A Cross Site Scripting (XSS) vulnerability exists in Nacos 2.0.3 in auth/users via the… CVSS 3.1MEDIUM 6.1
  • TI-2020-13672 Nacos 1.1.4 is affected by: Incorrect Access Control. CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences