Medium

Cross-Site Scripting in backbone

  • Disclosed: 18.02.2019
  • Updated: 11.10.2026 10:22

Affected versions of backbone are vulnerable to cross-site scripting when users are allowed to supply input to the Model#Escape function, and the output is then written to the DOM.

The vulnerability occurs as a result of the regular expression used to encode metacharacters failing to take HTML Entities such as < into account.

Recommendation

Update to version 0.5.0 or later.

Affected software

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PlatformPackageVulnerable versionsFixed in
npm package backbone >= 0.3.3, < 0.5.0 0.5.0

References

CVSS score 5.4/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE)
CWE-79
Platform
npm
Package
backbone
Disclosed
18.02.2019
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-j6p2-cx3w-6jcp - CC BY 4.0

Vulnerability history: backbone

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

This is the only known vulnerability of this package.

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