How severe is CVE-2009-2431?

CVE-2009-2431 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-2431 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2431?

CVE-2009-2431 affects Wordpress. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-2431?

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

When was CVE-2009-2431 published?

CVE-2009-2431 was published on 2009-07-10 and last updated on 2026-06-16.

CVE-2009-2431

CVE-2009-2431 is a medium-severity vulnerability in Wordpress 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Wordpress
Published: 2009-07-10
Last modified: 2026-06-16

Description

WordPress 2.7.1 places the username of a post's author in an HTML comment, which allows remote attackers to obtain sensitive information by reading the HTML source.

Frequently asked questions

What is CVE-2009-2431?: WordPress 2.7.1 places the username of a post's author in an HTML comment, which allows remote attackers to obtain sensitive information by reading the HTML source.
How severe is CVE-2009-2431?: CVE-2009-2431 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-2431 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2431?: CVE-2009-2431 affects Wordpress. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-2431?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-2431 published?: CVE-2009-2431 was published on 2009-07-10 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:wordpress:wordpress:2.7.1:*:*:*:*:*:*:*

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