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CVE-2021-44667

21
FAUCET Score

CVE-2021-44667 is a medium-severity Cross-Site Scripting (XSS) vulnerability affecting Alibaba Nacos version 2.0.3. Specifically, it allows for XSS via the pageSize and pageNo parameters within the auth/users section. The vulnerability has a CVSS score of 6.1, indicating it can be exploited remotely with low complexity, requiring user interaction, and potentially leading to low impact on confidentiality and integrity. There is currently no evidence of active exploitation, nor are there publicly available exploit tools or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.3CPE matchmatch criteria
cpe:2.3:a:alibaba:nacos:2.0.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.82%
Probability of exploitation in next 30 days
EPSS Percentile
53.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0082 is in the 62nd percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: com.alibaba.nacos:nacos-commonFixed in: 2.1.0-BETA
mavenpatch availablevia ghsa
Product: com.alibaba.nacos:nacos-commonFixed in: 1.4.5

Vendor Advisories (1)

mavenGHSA-4gr7-qw2q-jxh6medium

Cross-site Scripting in Nacos

Mar 12, 2022

References

github.com / alibaba/nacos/issues/7359
ExploitIssue TrackingThird Party Advisory