GHSA-h6mq-3cj6-h738
GHSA-h6mq-3cj6-h738 · Reverse Tabnabbing in showdown
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Versions of `showdown` prior to 1.9.1 are vulnerable to [Reverse Tabnabbing](https://www.owasp.org/index.php/Reverse_Tabnabbing). The package uses `target='_blank'` in anchor tags, allowing attackers to access `window.opener` for the original page when opening links. This is commonly used for phishing attacks. ## Recommendation Upgrade to version 1.9.1 or later.
CVSS 3.1 · Low · Fix available
- Published
- Updated
Stack: node
Affected products and versions
showdown npm
- Affected ranges
- SEMVER: < 1.9.1
Update to 1.9.1
Original sources
- https://github.com/showdownjs/showdown/pull/670
- https://github.com/showdownjs/showdown/commit/1cd281f0643ef613dc1d36847d4c6cbb22501d91
- https://github.com/showdownjs/showdown
- https://snyk.io/vuln/SNYK-JS-SHOWDOWN-469487
- https://www.npmjs.com/advisories/1302
- https://osv.dev/vulnerability/GHSA-h6mq-3cj6-h738