CVE-2007-1454

Name: CVE-2007-1454
Creator: NVD / NIST
Published: 2007-03-14T18:19:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.30%

Last modified Jun 16, 2026

CVE-2007-1454 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.30% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.30%

66.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Php	Php	5.2.0

References

Timeline

Published: Mar 14, 2007
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2007-1454?

How severe is CVE-2007-1454?

Severity scoring for CVE-2007-1454 is pending analysis. The EPSS model estimates a 1.30% probability of exploitation in the next 30 days.

How do I fix CVE-2007-1454?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2007-1454?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST