What is CVE-2018-20677?

CVE-2018-20677 is a medium-severity software vulnerability (Cross-site scripting (XSS)) with a CVSS score of 6.1. In Bootstrap before 3.4.0, XSS is possible in the affix configuration target property.

Is CVE-2018-20677 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 4%.

What products does CVE-2018-20677 affect?

Tracked products affected include Bootstrap. Check the version you run to see whether it is affected.

How do I fix CVE-2018-20677?

Apply the vendor fix in your normal patch cycle. Upgrade affected products to a fixed version.

← All products

CVE-2018-20677

MEDIUM severity · CVSS 6.1 · Cross-site scripting (XSS)

6.1CVSS MEDIUM

Summary

In Bootstrap before 3.4.0, XSS is possible in the affix configuration target property.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

Confidentiality impactLow

Integrity impactLow

Availability impactNone

Exploit probability (EPSS)4%

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products we track (1)

Bootstrap

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Additional information

NVD record
https://blog.getbootstrap.com/2018/12/13/bootstrap-3-4-0/Advisory
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://github.com/twbs/bootstrap/issues/27045Advisory