What is CVE-2018-14040?

CVE-2018-14040 is a medium-severity vulnerability in Getbootstrap Bootstrap, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-07-13.

How severe is CVE-2018-14040?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2018-14040 known to be exploited?

15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Getbootstrap Bootstrap

CVE-2018-14040

In Bootstrap before 4.1.2, XSS is possible in the collapse data-parent attribute.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-07-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.041 (90.5th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.041 · newest: 0.041 · change: 0.000

Affected products

Getbootstrap Bootstrap — versions 4.0.0
Debian Linux — versions 8.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

lists.debian.org/debian-lts-announce/2018/08/msg00027.html (mailing-list, Third Party Advisory)
seclists.org/bugtraq/2019/May/18 (mailing-list)
seclists.org/fulldisclosure/2019/May/11 (mailing-list)
seclists.org/fulldisclosure/2019/May/10 (mailing-list)
seclists.org/fulldisclosure/2019/May/13 (mailing-list)
lists.apache.org/thread.html/52e0e6b5df827ee7f1e68f7cc3babe61af3b2160f5d74a8546… (mailing-list)
lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b… (mailing-list)
lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864… (mailing-list)
lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d79… (mailing-list)
packetstormsecurity.com/files/152787/dotCMS-5.1.1-Vulnerable-Dependencies.html

Frequently asked questions

What is CVE-2018-14040?: CVE-2018-14040 is a medium-severity vulnerability in Getbootstrap Bootstrap, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-07-13.
How severe is CVE-2018-14040?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2018-14040 known to be exploited?: 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.