CVE-2009-4459

CVE-2009-4459 is a medium-severity vulnerability in Redmine with a CVSS 2.0 base score of 4.3. 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-79.

Key facts

Description

Redmine 0.8.7 and earlier uses the title tag before defining the character encoding in a meta tag, which allows remote attackers to conduct cross-site scripting (XSS) attacks and inject arbitrary script via UTF-7 encoded values in the title parameter to a new issue page, which may be interpreted as script by Internet Explorer 7 and 8.

Frequently asked questions

What is CVE-2009-4459?
Redmine 0.8.7 and earlier uses the title tag before defining the character encoding in a meta tag, which allows remote attackers to conduct cross-site scripting (XSS) attacks and inject arbitrary script via UTF-7 encoded values in the title parameter to a new issue page, which may be interpreted as script by Internet Explorer 7 and 8.
How severe is CVE-2009-4459?
CVE-2009-4459 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-4459 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4459?
CVE-2009-4459 primarily affects Redmine. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4459?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-4459 published?
CVE-2009-4459 was published on 2009-12-30 and last updated on 2026-06-16.

References

Affected products (29)

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