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MEDIUM severity

CVE-2024-6485 — bootstrap

MEDIUM

CVE-2024-6485 is a medium-severity (CVSS 6.4) Cross-site Scripting (XSS) vulnerability in bootstrap. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Bootstrap Cross-Site Scripting (XSS) vulnerability for data-* attributes

Also known asGHSA-vxmc-5x29-h64v
Published
Updated
Affected
1 pkg
Patched
None yet
Exploits
1 known
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-6485.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs43th percentile — riskier than 43% of all scored CVEsHighest risk
0.00%0.33%0.66%0.99%0.1%0.5%May 26Sep 26Nov 26

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

How urgent is this, really

Where this sits among everything scored

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.

15Kother npm packages depend on this — each one inherits the vulnerability until it's patched upstream
bootstrapnpm
8.1Mdownloads / week

Description

A security vulnerability has been discovered in bootstrap that could enable Cross-Site Scripting (XSS) attacks. The vulnerability is associated with the data-loading-text attribute within the button plugin. This vulnerability can be exploited by injecting malicious JavaScript code into the attribute, which would then be executed when the button's loading state is triggered.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmbootstrap≥ 1.4.0No fix
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

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

  2. Remediation status

    The records we use list no patched version of bootstrap for CVE-2024-6485. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    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
ProductFixed inAdvisory
Discovery 1 for RHEL 9discovery/discovery-server-rhel9:1.12.0-1RHSA-2025:1249

Frequently Asked Questions

A security vulnerability has been discovered in bootstrap that could enable Cross-Site Scripting (XSS) attacks. The vulnerability is associated with the data-loading-text attribute within the button plugin. This vulnerability can be exploited by injecting malicious JavaScript code into the attribute, which would then be executed when the button's loading state is triggered.
O3 Security · Impact-Aware SCA

Is CVE-2024-6485 in your dependencies?

Find it across npm, including transitive dependencies.

CVE-2024-6485: bootstrap XSS (Medium 6.4)