CVE-2021-3914

It was found that the smallrye health metrics UI component did not properly sanitize some user inputs. An attacker could use this flaw to conduct cross-site scripting attacks.

Published: 2022-08-25 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-3914 is rated Low Risk (36.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.43%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-3914

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.48% 0.43% -0.05%
2 2025-09-04 0.60% 0.48% -0.12%
3 2025-08-26 — 0.60% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-3914

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.7 [email protected]

Weakness enumeration for CVE-2021-3914

GitHub Security Advisory for CVE-2021-3914

GHSA-pvc3-wvxr-7cmf · Severity: medium · Ecosystem: maven — SmallRye Health UI Cross-site Scripting vulnerability

OS Trackers for CVE-2021-3914

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2021-3914

Affected software / configurations for CVE-2021-3914

Vendor Product Version Raw CPE
redhat build_of_quarkus < 2.7.5 cpe:2.3:a:redhat:build_of_quarkus:*:*:*:*:*:*:*:*
redhat build_of_quarkus — cpe:2.3:a:redhat:build_of_quarkus:-:*:*:*:text-only:*:*:*
redhat openshift_application_runtimes 1.0 cpe:2.3:a:redhat:openshift_application_runtimes:1.0:*:*:*:*:*:*:*
redhat smallrye_health — cpe:2.3:a:redhat:smallrye_health:-:*:*:*:*:*:*:*

References for CVE-2021-3914

cvelogic Threat Intelligence