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Fencer Vulns
medium 6.1

CVE-2019-20921 json

Cross-site scripting in bootstrap-select

published 2020-09-03 6 y ago modified 2026-09-10 1 mo ago also GHSA-7c82-mp33-r854 , GHSA-9r7h-6639-v5mw , EUVD-2021-0995

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

bootstrap-select before 1.13.6 allows Cross-Site Scripting (XSS). It does not escape title values in OPTION elements. This may allow attackers to execute arbitrary JavaScript in a victim's browser.

Patch / fix

  • npm bootstrap-select 1.13.6
  • nuget bootstrap-select 1.13.6
  • snapappointments bootstrap-select 1.13.6
  • rhvm rhev manager 4.4 4.4.5.9-0.1.el8ev
  • ovirt-engine rhev manager 4.4 4.4.5.9-0.1.el8ev
  • ovirt-web-ui rhev manager 4.4 1.6.7-1.el8ev
  • ovirt-engine-setup rhev manager 4.4 4.4.5.9-0.1.el8ev
  • ovirt-engine-tools rhev manager 4.4 4.4.5.9-0.1.el8ev
  • ovirt-engine-backend rhev manager 4.4 4.4.5.9-0.1.el8ev
  • ovirt-engine-restapi rhev manager 4.4 4.4.5.9-0.1.el8ev
  • ovirt-engine-dbscripts rhev manager 4.4 4.4.5.9-0.1.el8ev

red hat advisories RHSA-2021:1169RHSA-2021:1186

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-20921 updated cvss 6.1

nodejs-bootstrap-select: not escaping title values on <option> may lead to XSS

  • Red Hat OpenShift Service Mesh 1 kiali
    affected: no fix available “Fix deferred”
  • Red Hat Single Sign-On 7 keycloak-theme keycloak-theme Red Hat Virtualization 4 rhvm, ovirt-engine, ovirt-engine-setup, ovirt-engine-tools, ovirt-engine-backend, ovirt-engine-restapi, +14 more
    affected: no fix planned “Will not fix”
  • Red Hat RHEL-8-RHEV-S-4.4 - Red Hat Virtualization Engine 4.4 ovirt-web-ui 1.6.7-1.el8ev, ovirt-engine-ui-extensions 1.2.5-1.el8ev
    fixed: vendor fix RHSA-2021:1186
  • Red Hat OpenShift Container Platform 3.11 openshift3/ose-console Red Hat OpenShift Container Platform 4 openshift4/ose-console Red Hat RHEL-8-RHEV-S-4.4 - Red Hat Virtualization Engine 4.4 rhvm 4.4.5.9-0.1.el8ev, rhvm 4.4.5.11-0.1.el8ev, apache-sshd 2.6.0-1.el8ev, ovirt-web-ui 1.6.8-1.el8ev, ansible-runner 1.4.6-2.el8ar, ovirt-engine 4.4.5.9-0.1.el8ev, +43 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.74% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
npm bootstrap-select
<1.13.6
1.13.6
nuget bootstrap-select
<1.13.6
1.13.6

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.