Is bootstrap 3.3 vulnerable?

npm · 7 releases from 3.3.0 to 3.3.7 · latest bootstrap is 5.3.8 · checked 1 Nov 2026

Yes: 7 known advisories

Yes. bootstrap 3.3.7, the last 3.3 release, is affected by 7 known security advisories (7 medium), including CVE-2024-6485, CVE-2018-14040, CVE-2019-8331. At least one has no fixed release yet.

Is your project affected?

Private repo? Upload its lockfile instead, or connect GitHub to check every repo.

Advisories affecting bootstrap 3.3.7

  • MediumCVE-2024-6485GHSA-vxmc-5x29-h64v11 Jul 2024

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

    Affected
    >=1.4.0 <=3.4.1
    Fixed in
    No fix released
  • MediumCVE-2018-14040GHSA-3wqf-4x89-9g7913 May 2022

    Bootstrap vulnerable to Cross-Site Scripting (XSS)

    Affected
    >=4.0.0 <4.1.2 · >=2.3.0 <3.4.0
    Fixed in
    3.4.0, 4.1.2
  • MediumCVE-2019-8331GHSA-9v3m-8fp8-mj9922 Feb 2019

    Bootstrap Vulnerable to Cross-Site Scripting

    Affected
    >=4.0.0 <4.3.1 · >=3.0.0 <3.4.1
    Fixed in
    3.4.1, 4.3.1
  • MediumCVE-2018-20677GHSA-ph58-4vrj-w6hr17 Jan 2019

    bootstrap Cross-site Scripting vulnerability

    Affected
    <3.4.0
    Fixed in
    3.4.0
  • MediumCVE-2018-20676GHSA-3mgp-fx93-9xv517 Jan 2019

    XSS vulnerability that affects bootstrap

    Affected
    <3.4.0
    Fixed in
    3.4.0
  • MediumCVE-2016-10735GHSA-4p24-vmcr-4gqj17 Jan 2019

    Bootstrap Cross-site Scripting vulnerability

    Affected
    >=2.0.4 <3.4.0 · >=4.0.0-beta <4.0.0-beta.2
    Fixed in
    3.4.0, 4.0.0-beta.2
  • MediumCVE-2018-14042GHSA-7mvr-5x2g-wfc813 Sept 2018

    Bootstrap Cross-site Scripting vulnerability

    Affected
    >=4.0.0 <4.1.2 · >=2.3.0 <3.4.0
    Fixed in
    3.4.0, 4.1.2

Which of your client projects are still on bootstrap 3.3?

NPMscan reads the lockfiles in every GitHub repo you pick, finds the exact bootstrap version each one installs, and checks it against these advisories. Each finding comes with the command that fixes it.

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Other bootstrap versions

Advisory data from OSV.dev (opens OSV.dev in a new tab), which includes the GitHub Advisory Database. Release list from the npm registry. Refreshed daily.