How severe is GHSA-7c82-mp33-r854?

GHSA-7c82-mp33-r854 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-7c82-mp33-r854?

GHSA-7c82-mp33-r854 affects the following packages: bootstrap-select (npm), bootstrap-select (NuGet). Ecosystems affected: npm, NuGet.

How do I fix GHSA-7c82-mp33-r854?

Update bootstrap-select to 1.13.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7c82-mp33-r854 is resolved across your whole dependency graph.

How do I detect GHSA-7c82-mp33-r854 in my npm, NuGet 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-7c82-mp33-r854 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-7c82-mp33-r854 actively exploited in the wild?

No public exploit code has been indexed for GHSA-7c82-mp33-r854 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-7c82-mp33-r854?

GHSA-7c82-mp33-r854 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-7c82-mp33-r854?

GHSA-7c82-mp33-r854 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-7c82-mp33-r854 published, and has it been updated?

GHSA-7c82-mp33-r854 was published on May 7, 2021 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.NET NuGet

Not in CISA KEV

MEDIUM severity

Cross-site scripting in bootstrap-selectGHSA-7c82-mp33-r854

MEDIUMFix: snapappointments/bootstrap-select@ab6e068

GHSA-7c82-mp33-r854 is a medium-severity (CVSS 6.1) 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-9r7h-6639-v5mwSNYK-JS-BOOTSTRAPSELECT-570457

Published

May 7, 2021

Updated

Sep 10, 2026

Affected

2 pkgs

Patched

2 / 2

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.

How urgent is this, really

GHSA-7c82-mp33-r854 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

2 pkgs 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

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.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`bootstrap-select`	all versions	1.13.6`npm install bootstrap-select@1.13.6`
.NETNuGet	`bootstrap-select`	all versions	1.13.6`dotnet add package bootstrap-select --version 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-7c82-mp33-r854 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

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.

O3 Security · Impact-Aware SCA

Is GHSA-7c82-mp33-r854 in your dependencies?

Find it across npm, NuGet, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

6.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No known public exploit tooling found.

OpenSSF Scorecard

Package health score

bootstrap-select

2.8/10

Maintained0/10

Code-Review1/10

Branch-Protection0/10

Assessed Oct 5, 2026

Timeline

Disclosed

May 7, 2021

Last updated

Sep 10, 2026

Identifiers

GHSA-7c82-mp33-r854

GHSA-9r7h-6639-v5mw

SNYK-JS-BOOTSTRAPSELECT-570457

References

Advisorynvd.nist.gov Webgithub.com Webgithub.com Webissues.jtl-software.de Websnyk.io Packagegithub.com

Related vulnerabilities

Also affects bootstrap-select

This CVE is medium severity; 2 of 2 other CVEs affecting bootstrap-select are rated as high or higher (top: high).

CVE-2019-20921GHSA-9r7h-6639-v5mw

Same weakness: CWE-79

This CVE is medium severity; 6 of 6 other CVEs with CWE-79 are rated as high or higher (top: high).

CVE-2026-91127CVE-2026-77606CVE-2026-84992CVE-2026-77608CVE-2026-77607GHSA-9rcc-pmj8-ffhrBrowse all CWE-79

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedSep 10, 2026