How severe is CVE-2008-5278?

CVE-2008-5278 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2008-5278 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5278?

CVE-2008-5278 primarily affects Wordpress. In total, 74 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5278?

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

When was CVE-2008-5278 published?

CVE-2008-5278 was published on 2008-11-28 and last updated on 2026-06-16.

CVE-2008-5278

CVE-2008-5278 is a medium-severity vulnerability in Wordpress 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

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Wordpress
Published: 2008-11-28
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in the self_link function in in the RSS Feed Generator (wp-includes/feed.php) for WordPress before 2.6.5 allows remote attackers to inject arbitrary web script or HTML via the Host header (HTTP_HOST variable).

Frequently asked questions

What is CVE-2008-5278?: Cross-site scripting (XSS) vulnerability in the self_link function in in the RSS Feed Generator (wp-includes/feed.php) for WordPress before 2.6.5 allows remote attackers to inject arbitrary web script or HTML via the Host header (HTTP_HOST variable).
How severe is CVE-2008-5278?: CVE-2008-5278 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2008-5278 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-5278?: CVE-2008-5278 primarily affects Wordpress. In total, 74 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-5278?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-5278 published?: CVE-2008-5278 was published on 2008-11-28 and last updated on 2026-06-16.

References

Affected products (74)

cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.6.2:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.6.2:beta_2:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.6.2.1:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.6.2.1:beta_2:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.7:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.71:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.71-gold:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.72:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.72:beta1:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.72:beta2:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.72:rc1:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:0.711:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.0:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.0-platinum:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.0.1-miles:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.0.2-blakey:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.2:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.2:beta:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.2-delta:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.2-mingus:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.3.1:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.4:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.5:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.5-strayhorn:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.5.1.2:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.5.1.3:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:1.6:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:2.0:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:2.0.4:*:*:*:*:*:*:*

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