Bootstrap 5.1.3 was a widely used version of the popular front-end framework, but like any software, it faced scrutiny regarding security vulnerabilities. For developers and security researchers, understanding these potential exploits is vital for maintaining robust web applications.
, the best practice is to move to the latest stable release to ensure all rescinded or newly discovered vulnerabilities are patched. Upgrade to Bootstrap 5.3.x:
Instead of generic web scanners, use a tool that understands semantic versioning, such as Snyk or npm audit. Run: bootstrap 5.1.3 exploit
The impact of this vulnerability is relatively low, as it requires user interaction and is limited to styling and layout modifications. However, in certain scenarios, this vulnerability could be used to deface a website or distract users.
As of April 2026, Bootstrap 5.1.3 has no known direct, unpatched security vulnerabilities according to security databases like Snyk. Bootstrap 5
What is the Bootstrap 5.1.3 exploit?
The vulnerability, tracked as CVE-2022-27663, is a browser object model (BOM) injection vulnerability in the data-bs-toggle attribute of Bootstrap 5.1.3. The exploit allows an attacker to inject malicious JavaScript code into a website, potentially leading to arbitrary code execution, cookie theft, and other malicious activities.
// Safe with DOMPurify import DOMPurify from 'dompurify'; element.setAttribute('data-bs-content', DOMPurify.sanitize(userInput)); For example, an attacker might input: Legacy Data-Attribute
For example, an attacker might input:
Legacy Data-Attribute Issues: Although primarily fixed in v5, older "data-attribute" exploits (like those found in CVE-2019-8331) serve as a blueprint for how attackers attempt to exploit tooltips and popovers in v5 by injecting malicious code through the data-template or data-container attributes. Anatomy of a Potential Exploit
