CVE-2021-44667
Cross-site Scripting in Nacos
A Cross Site Scripting (XSS) vulnerability exists in Nacos 2.0.3 in auth/users via the (1) pageSize and (2) pageNo parameters.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A Cross Site Scripting (XSS) vulnerability exists in Nacos 2.0.3 in auth/users via the (1) pageSize and (2) pageNo parameters.
- Record
CVE-2021-44667- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
A Cross Site Scripting (XSS) vulnerability exists in Nacos 2.0.3 in auth/users via the (1) pageSize and (2) pageNo parameters.
- Record
CVE-2021-44667- Updated
- 2026-11-02
EUVDEUVD-2022-1307 No score
A Cross Site Scripting (XSS) vulnerability exists in Nacos 2.0.3 in auth/users via the (1) pageSize and (2) pageNo parameters.
- Record
EUVD-2022-1307- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4gr7-qw2q-jxh6
Cross-site Scripting in Nacos
A Cross Site Scripting (XSS) vulnerability exists in Nacos prior to 1.4.5 and 2.1.0-BETA in auth/users via the (1) pageSize and (2) pageNo parameters.
- Record
GHSA-4gr7-qw2q-jxh6- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
A Cross Site Scripting (XSS) vulnerability exists in Nacos 2.0.3 in auth/users via the (1) pageSize and (2) pageNo parameters.
- Record
CVE-2021-44667- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-4gr7-qw2q-jxh6
Cross-site Scripting in Nacos
A Cross Site Scripting (XSS) vulnerability exists in Nacos prior to 1.4.5 and 2.1.0-BETA in auth/users via the (1) pageSize and (2) pageNo parameters.
- Record
GHSA-4gr7-qw2q-jxh6- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.alibaba.nacos:nacos-commonMaven |
2.0.0-ALPHA.1 up to 2.1.0-BETA | 2.1.0-BETA |
com.alibaba.nacos:nacos-commonMaven |
before 1.4.5 | 1.4.5 |
com.alibaba.nacos:nacos-commonMaven |
2.0.0-ALPHA.1 up to 2.1.0-BETA, plus listed versions 2.0.02.0.0-ALPHA.22.0.0-BETA2.0.12.0.22.0.32.0.4 |
2.1.0-BETA |
com.alibaba.nacos:nacos-commonMaven |
before 1.4.5, plus listed versions 0.1.00.2.00.2.10.2.1-RC10.3.0 Show 38 moreShow less0.3.0-RC10.4.00.5.00.6.00.6.10.6.20.8.00.8.10.8.20.9.00.9.11.0.01.0.0-RC11.0.0-RC21.0.0-RC31.0.0-RC41.0.11.1.01.1.11.1.21.1.31.1.41.2.01.2.0-beta.01.2.0-beta.11.2.11.3.01.3.11.3.1-BETA1.3.1-BETA.11.3.21.3.31.4.01.4.0-BETA1.4.11.4.21.4.31.4.4 |
1.4.5 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | shoucheng3/alibaba__nacos_CVE-2021-44667_2-0-3 | 2025-08-16 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-44667 is a medium vulnerability (CVSS 6.1) in Alibaba Nacos, published March 11, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.83%, the 57th percentile. Fixed in com.alibaba.nacos:nacos-common 2.1.0-BETA.
References
github.com/alibaba/nacos/issues/7359
nvd.nist.gov/vuln/detail/CVE-2021-44667