How severe is CVE-2009-0754?

CVE-2009-0754 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-2009-0754 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0754?

CVE-2009-0754 primarily affects Php. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0754?

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

When was CVE-2009-0754 published?

CVE-2009-0754 was published on 2009-03-03 and last updated on 2026-06-16.

CVE-2009-0754

CVE-2009-0754 is a low-severity vulnerability in Php with a CVSS 2.0 base score of 2.1. 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-134.

Key facts

Severity: Low (CVSS 2.0 base score 2.1)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-134
Affected product: Php
Published: 2009-03-03
Last modified: 2026-06-16

Description

PHP 4.4.4, 5.1.6, and other versions, when running on Apache, allows local users to modify behavior of other sites hosted on the same web server by modifying the mbstring.func_overload setting within .htaccess, which causes this setting to be applied to other virtual hosts on the same server.

Frequently asked questions

What is CVE-2009-0754?: PHP 4.4.4, 5.1.6, and other versions, when running on Apache, allows local users to modify behavior of other sites hosted on the same web server by modifying the mbstring.func_overload setting within .htaccess, which causes this setting to be applied to other virtual hosts on the same server.
How severe is CVE-2009-0754?: CVE-2009-0754 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2009-0754 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0754?: CVE-2009-0754 primarily affects Php. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0754?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0754 published?: CVE-2009-0754 was published on 2009-03-03 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:php:php:4.4.4:*:*:*:*:*:*:*
cpe:2.3:a:php:php:5.1.6:*:*:*:*:*:*:*

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