CVE-2013-4562: The omniauth-facebook gem 1.4.1 before 1.5.0 does not properly store the session parameter, which allows remot

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MEDIUM 6.8DOWNGRADE

CVE-2013-4562 is a medium-severity flaw (CVSS 6.8) affecting omniauth-facebook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The omniauth-facebook gem 1.4.1 before 1.5.0 does not properly store the session parameter, which allows remote attackers to conduct cross-site request forgery (CSRF) attacks via the state parameter.

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	1.2% (top 33%)
CISA exploited list	No
Weakness	CWE-352
Published	2014-05-13
Last modified	2026-06-16

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

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

Am I affected?

Timeline

2014-05-13 15:55 UTCPublished CVE record published
2026-06-16 23:57 UTCUpdated Record last modified

madeofcode omniauth-facebook DOWNGRADE

Affected: 1.4.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4.1

1. Check installed version

apt-cache policy omniauth-facebook || rpm -q omniauth-facebook || omniauth-facebook --version

2. No fixed release: DOWNGRADE to a release before 1.4.1 (Debian / Ubuntu)

apt-cache madison omniauth-facebook sudo apt install omniauth-facebook=<VERSION_BEFORE_1.4.1> sudo apt-mark hold omniauth-facebook

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

dnf --showduplicates list omniauth-facebook sudo dnf downgrade omniauth-facebook-<VERSION_BEFORE_1.4.1> sudo dnf versionlock add omniauth-facebook

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-2013-4562?

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

Is CVE-2013-4562 being exploited?

CVE-2013-4562 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-2013-4562 affect?

CVE-2013-4562 affects omniauth-facebook. Severity is medium (CVSS 6.8). The omniauth-facebook gem 1.4.1 before 1.5.0 does not properly store the session parameter, which allows remote attackers to conduct cross-site request forgery (CSRF) attacks via the state parameter.

How urgent is CVE-2013-4562?

Priority 46/100. Public exploit reference

Related CVEs

CVE-2013-4593 HIGH 7.5 UPGRADE RubyGem omniauth-facebook has an access token security vulnerability

References

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