CVE-2013-2105: The Show In Browser (show_in_browser) gem 0.0.3 for Ruby allows local users to inject arbitrary web script or

Routine

LOW 3.3DOWNGRADE

CVE-2013-2105 is a low-severity flaw (CVSS 3.3) affecting show in browser. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Show In Browser (show_in_browser) gem 0.0.3 for Ruby allows local users to inject arbitrary web script or HTML via a symlink attack on /tmp/browser.html.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	3.3 (Low)
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-59
Published	2014-04-22
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: jonathan leung

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-04-22 14:23 UTCPublished CVE record published
2026-06-16 23:52 UTCUpdated Record last modified

jonathan leung show in browser DOWNGRADE

Affected: 0.0.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.3

1. Check installed version

apt-cache policy show-in-browser || rpm -q show-in-browser || show-in-browser --version

2. No fixed release: DOWNGRADE to a release before 0.0.3 (Debian / Ubuntu)

apt-cache madison show-in-browser sudo apt install show-in-browser=<VERSION_BEFORE_0.0.3> sudo apt-mark hold show-in-browser

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list show-in-browser sudo dnf downgrade show-in-browser-<VERSION_BEFORE_0.0.3> sudo dnf versionlock add show-in-browser

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-2105?

show in browser: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-2105 being exploited?

CVE-2013-2105 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-2105 affect?

CVE-2013-2105 affects show in browser. Severity is low (CVSS 3.3). The Show In Browser (show_in_browser) gem 0.0.3 for Ruby allows local users to inject arbitrary web script or HTML via a symlink attack on /tmp/browser.html.

How urgent is CVE-2013-2105?

Priority 25/100. Public exploit reference

Software pages

Ruby vulnerabilities

References

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