How severe is CVE-2007-0539?

CVE-2007-0539 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2007-0539 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-2007-0539?

CVE-2007-0539 affects Wordpress. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-0539?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2007-0539 published?

CVE-2007-0539 was published on 2007-01-29 and last updated on 2026-06-16.

CVE-2007-0539

CVE-2007-0539 is a high-severity vulnerability in Wordpress with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Wordpress
Published: 2007-01-29
Last modified: 2026-06-16

Description

The wp_remote_fopen function in WordPress before 2.1 allows remote attackers to cause a denial of service (bandwidth or thread consumption) via pingback service calls with a source URI that corresponds to a large file, which triggers a long download session without a timeout constraint.

Frequently asked questions

What is CVE-2007-0539?: The wp_remote_fopen function in WordPress before 2.1 allows remote attackers to cause a denial of service (bandwidth or thread consumption) via pingback service calls with a source URI that corresponds to a large file, which triggers a long download session without a timeout constraint.
How severe is CVE-2007-0539?: CVE-2007-0539 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2007-0539 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-2007-0539?: CVE-2007-0539 affects Wordpress. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-0539?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-0539 published?: CVE-2007-0539 was published on 2007-01-29 and last updated on 2026-06-16.

References

Affected products (1)

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

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