What is GHSA-9r7h-6639-v5mw?

Versions of `bootstrap-select` prior to 1.13.6 are vulnerable to Cross-Site Scripting (XSS). The package does not escape `title` values on ` ` tags. This may allow attackers to execute arbitrary JavaScript in a victim's browser. ## Recommendation Upgrade to version 1.13.6 or later.

How severe is GHSA-9r7h-6639-v5mw?

No CVSS score has been assigned to GHSA-9r7h-6639-v5mw yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-9r7h-6639-v5mw?

GHSA-9r7h-6639-v5mw affects the following packages: bootstrap-select (npm). Ecosystems affected: npm.

How do I fix GHSA-9r7h-6639-v5mw?

Update bootstrap-select to 1.13.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-9r7h-6639-v5mw is resolved across your whole dependency graph.

How do I detect GHSA-9r7h-6639-v5mw in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for bootstrap-select, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-9r7h-6639-v5mw if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is GHSA-9r7h-6639-v5mw actively exploited in the wild?

No public exploit code has been indexed for GHSA-9r7h-6639-v5mw yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-9r7h-6639-v5mw?

GHSA-9r7h-6639-v5mw has an EPSS (Exploit Prediction Scoring System) score of 1.7%, placing it in the 77th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-9r7h-6639-v5mw?

GHSA-9r7h-6639-v5mw is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-9r7h-6639-v5mw published, and has it been updated?

GHSA-9r7h-6639-v5mw was published on September 3, 2020 and was last updated on September 10, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

Cross-Site Scripting in bootstrap-selectGHSA-9r7h-6639-v5mw

GHSA-9r7h-6639-v5mw is a Cross-site Scripting (XSS) vulnerability in bootstrap-select. A fix is available for bootstrap-select — see the affected versions and patch details below.

Also known asCVE-2019-20921 GHSA-7c82-mp33-r854SNYK-JS-BOOTSTRAPSELECT-570457

Published

Sep 3, 2020

Updated

Sep 10, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

1.7%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs77th percentile — riskier than 77% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

314other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

bootstrap-selectnpm

150Kdownloads / week

Description

Versions of bootstrap-select prior to 1.13.6 are vulnerable to Cross-Site Scripting (XSS). The package does not escape title values on <option> tags. This may allow attackers to execute arbitrary JavaScript in a victim's browser.

Recommendation

Upgrade to version 1.13.6 or later.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`bootstrap-select`	all versions	1.13.6`npm install bootstrap-select@1.13.6`

Affected Products

1 product · 1 configurations

Application

bootstrap-selectsnapappointments

< 1.13.6

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for bootstrap-select, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update bootstrap-select to 1.13.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-9r7h-6639-v5mw is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

In OpenShift Service Mesh (OSSM) the openshift-service-mesh/kiali-rhel7 container (which installs the kiali rpm) is behind OpenShift OAuth authentication restricting access to the vulnerable bootstrap-select library to authenticated users only, therefore the impact is low.

Product	Fixed in	Advisory
Red Hat Virtualization Engine 4.4	`ovirt-web-ui-0:1.6.7-1.el8ev`	RHSA-2021:1169
Red Hat Virtualization Engine 4.4	`ovirt-engine-ui-extensions-0:1.2.5-1.el8ev`	RHSA-2021:1186

Frequently Asked Questions

Versions of `bootstrap-select` prior to 1.13.6 are vulnerable to Cross-Site Scripting (XSS). The package does not escape `title` values on `<option>` tags. This may allow attackers to execute arbitrary JavaScript in a victim's browser. ## Recommendation Upgrade to version 1.13.6 or later.

O3 Security · Impact-Aware SCA

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