Gemirro Stored XSS in Gemspec "homepage" value

MEDIUM 6.1CVE-2017-16833 · GHSA-x7p2-x2j6-mwhr · Published 15/11/2017 · updated 17/06/2026

In short

CVE-2017-16833 is a MEDIUM (CVSS 6.1) vulnerability affecting gemirro, gemirro (gemirro project).
Chance of exploitation in the next 30 days (EPSS): 0.81%, higher than 57.2% of all vulnerabilities.
Fix: update to 0.16.0 or later.

Package	Affected versions	Patched versions
gemirro RubyGems	`< 0.16.0`	`0.16.0`
gemirro gemirro_project	`< 0.16.0`	`0.16.0`

Description

Stored cross-site scripting (XSS) vulnerability in Gemirro before 0.16.0 allows attackers to inject arbitrary web script via a crafted javascript: URL in the "homepage" value of a ".gemspec" file. A ".gemspec" file must be created with a JavaScript URL in the homepage value. This can be used to build a gem for upload to the Gemirro server, in order to achieve stored XSS via the author name hyperlink.

NVD description

Stored cross-site scripting (XSS) vulnerability in Gemirro before 0.16.0 allows attackers to inject arbitrary web script via a crafted javascript: URL in the "homepage" value of a ".gemspec" file.

References

nvd.nist.gov/vuln/detail/CVE-2017-16833 · ADVISORY
PierreRambaud/gemirro commit 9659f9b · WEB
PierreRambaud/gemirro · PACKAGE
rubysec/ruby-advisory-db · WEB

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