GitLab · Report #213114

Gitlab.com is vulnerable to reverse tabnabbing via AsciiDoc links. (#3)

Validstatus

mediumseverity

5upvotes

9 May 2017disclosed

How it was found

Dear GitLab bug bounty team,

Summary

Gitlab.com is vulnerable to reverse tabnabbing in AsciiDoc files.

Why does this vulnerability exist?

In AsciiDoc the following http://example.com[Reverse Tabnabbing^] is equivalent to <a href="http://example.com" target="_blank">Reverse Tabnabbing</a>.

How can this exploited?

Same scenario as https://hackerone.com/reports/211065. ;)

Best regards, Ed

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original