What’s Vulnerable › Vulnerabilities

CVE-2018-20676

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-01-09 · updated 2026-06-17
• Weakness: CWE-79

Description

In Bootstrap before 3.4.0, XSS is possible in the tooltip data-viewport attribute.

Affected products

• Getbootstrap Bootstrap: before 3.4.0 — fixed in 3.4.0

How to fix

Upgrade to a fixed version: Getbootstrap Bootstrap 3.4.0. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHBA-2019:1076
• https://access.redhat.com/errata/RHBA-2019:1570
• https://access.redhat.com/errata/RHSA-2019:1456
• https://access.redhat.com/errata/RHSA-2019:3023
• https://access.redhat.com/errata/RHSA-2020:0132
• https://access.redhat.com/errata/RHSA-2020:0133
• https://blog.getbootstrap.com/2018/12/13/bootstrap-3-4-0/
• https://github.com/twbs/bootstrap/issues/27044
• https://github.com/twbs/bootstrap/issues/27915#issuecomment-452140906
• https://github.com/twbs/bootstrap/issues/27915#issuecomment-452196628
• https://github.com/twbs/bootstrap/pull/27047
• https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E

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