How severe is CVE-2007-1454?

CVE-2007-1454 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2007-1454 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-1454?

CVE-2007-1454 affects Php. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-1454?

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

When was CVE-2007-1454 published?

CVE-2007-1454 was published on 2007-03-14 and last updated on 2026-06-16.

CVE-2007-1454

CVE-2007-1454 is a medium-severity vulnerability in Php 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.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Php
Published: 2007-03-14
Last modified: 2026-06-16

Description

ext/filter in PHP 5.2.0, when FILTER_SANITIZE_STRING is used with the FILTER_FLAG_STRIP_LOW flag, does not properly strip HTML tags, which allows remote attackers to conduct cross-site scripting (XSS) attacks via HTML with a '<' character followed by certain whitespace characters, which passes one filter but is collapsed into a valid tag, as demonstrated using %0b.

Frequently asked questions

What is CVE-2007-1454?: ext/filter in PHP 5.2.0, when FILTER_SANITIZE_STRING is used with the FILTER_FLAG_STRIP_LOW flag, does not properly strip HTML tags, which allows remote attackers to conduct cross-site scripting (XSS) attacks via HTML with a '<' character followed by certain whitespace characters, which passes one filter but is collapsed into a valid tag, as demonstrated using %0b.
How severe is CVE-2007-1454?: CVE-2007-1454 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2007-1454 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1454?: CVE-2007-1454 affects Php. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-1454?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-1454 published?: CVE-2007-1454 was published on 2007-03-14 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:php:php:5.2.0:*:*:*:*:*:*:*

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