CVE-2013-1911: lib/ldoce/word.rb in the ldoce 0.0.2 gem for Ruby allows remote attackers to execute arbitrary commands via sh

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MEDIUM 6.8DOWNGRADE

CVE-2013-1911 is a medium-severity flaw (CVSS 6.8) affecting ldoce. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

lib/ldoce/word.rb in the ldoce 0.0.2 gem for Ruby allows remote attackers to execute arbitrary commands via shell metacharacters in (1) an mp3 URL or (2) file name.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	2.0% (top 20%)
CISA exploited list	No
Weakness	CWE-20
Published	2013-04-03
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: mark burns

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

Am I affected?

Timeline

2013-04-03 00:55 UTCPublished CVE record published
2026-06-16 23:52 UTCUpdated Record last modified

mark burns ldoce DOWNGRADE

Affected: 0.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.2

1. Check installed version

apt-cache policy ldoce || rpm -q ldoce || ldoce --version

2. No fixed release: DOWNGRADE to a release before 0.0.2 (Debian / Ubuntu)

apt-cache madison ldoce sudo apt install ldoce=<VERSION_BEFORE_0.0.2> sudo apt-mark hold ldoce

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

dnf --showduplicates list ldoce sudo dnf downgrade ldoce-<VERSION_BEFORE_0.0.2> sudo dnf versionlock add ldoce

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-2013-1911?

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

Is CVE-2013-1911 being exploited?

CVE-2013-1911 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-2013-1911 affect?

CVE-2013-1911 affects ldoce. Severity is medium (CVSS 6.8). lib/ldoce/word.rb in the ldoce 0.0.2 gem for Ruby allows remote attackers to execute arbitrary commands via shell metacharacters in (1) an mp3 URL or (2) file name.

How urgent is CVE-2013-1911?

Priority 49/100. Public exploit reference

Software pages

Ruby vulnerabilities

References

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