How severe is CVE-2008-5189?

CVE-2008-5189 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2008-5189 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5189?

CVE-2008-5189 primarily affects Rubyonrails Rails. In total, 49 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5189?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-5189 published?

CVE-2008-5189 was published on 2008-11-21 and last updated on 2026-06-16.

CVE-2008-5189

CVE-2008-5189 is a medium-severity vulnerability in Rubyonrails Rails with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Rubyonrails Rails
Published: 2008-11-21
Last modified: 2026-06-16

Description

CRLF injection vulnerability in Ruby on Rails before 2.0.5 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a crafted URL to the redirect_to function.

Frequently asked questions

What is CVE-2008-5189?: CRLF injection vulnerability in Ruby on Rails before 2.0.5 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a crafted URL to the redirect_to function.
How severe is CVE-2008-5189?: CVE-2008-5189 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2008-5189 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-5189?: CVE-2008-5189 primarily affects Rubyonrails Rails. In total, 49 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-5189?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-5189 published?: CVE-2008-5189 was published on 2008-11-21 and last updated on 2026-06-16.

References

Affected products (49)

cpe:2.3:a:rubyonrails:rails:0.9.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.9.2:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.9.3:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.9.4:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.9.4.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.10.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.10.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.11.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.11.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.12.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.13.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.13.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.14.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.14.2:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.14.3:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:0.14.4:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.1.6:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.2.6:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:1.9.5:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:2.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:2.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:ruby_on_rails:*:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:ruby_on_rails:0.5.0:*:*:*:*:*:*:*

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