CVE-2019-8331

MEDIUMNVD 6.1

6.1

In Bootstrap before 3.4.1 and 4.3.x before 4.3.1, XSS is possible in the tooltip or popover data-template attribute.

CVSS v3: 6.1
EG Score: —
EPSS: 82.4%
KEV: Not listed

Published

February 20, 2019

Last Modified

November 21, 2024

References (54)

Affected Packages

(10 across 5 ecosystems)

NuGet(3)

Package	Vulnerable range	Fixed in	Dependents
bootstrap	3.0.0 ... 3.4.0 (17 versions)	3.4.1	—
Bootstrap.Less	3.3.5 ... 3.4.0 (6 versions)	3.4.1	—
bootstrap.sass	3.4.1 ... 4.2.1 (17 versions)	4.3.1	—

RubyGems(3)

Package	Vulnerable range	Fixed in	Dependents
bootstrap	4.0.0 ... 4.3.0 (18 versions)	4.3.1	—
bootstrap-sass	3.0.0.0 ... 3.4.0 (24 versions)	3.4.1	—
twitter-bootstrap-rails	0.0.3 ... 5.0.0 (45 versions)	—	—

npm(2)

Package	Vulnerable range	Fixed in	Dependents
bootstrap	—	3.4.1	—
bootstrap-sass	—	3.4.1	—

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
org.webjars:bootstrap	4.0.0 ... 4.3.0 (9 versions)	4.3.1	—

Packagist(1)

Package	Vulnerable range	Fixed in	Dependents
twbs/bootstrap	v4.0.0 ... v4.3.0 (8 versions)	4.3.1	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-79Cross-site Scripting (XSS)

Data Freshness Timeline

(refreshed 5× in last 7d / 5× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 23:13 UTCOSV refresh
2026-05-26 13:42 UTCepss_batch
2026-05-24 16:47 UTCepss_batch

Frequently asked(5)

What is CVE-2019-8331?

CVE-2019-8331 is a medium vulnerability published on February 20, 2019. In Bootstrap before 3.4.1 and 4.3.x before 4.3.1, XSS is possible in the tooltip or popover data-template attribute.

When was CVE-2019-8331 disclosed?

CVE-2019-8331 was first published in the National Vulnerability Database on February 20, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-8331 actively exploited?

CVE-2019-8331 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 82.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-8331?

CVE-2019-8331 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2019-8331?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-8331, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-8331

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