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6.3 Medium

CVE-2025-1734 In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when…

Description

In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when receiving headers from HTTP server, the headers missing a colon (:) are treated as valid headers even though they are not. This may confuse applications into accepting invalid headers.

Affected products and versions

Product Affected versions Fixed in
PHP 8.4 earliest → < 8.4.5 8.4.5
PHP 8.3 earliest → < 8.3.19 8.3.19
PHP 8.2 earliest → < 8.2.28 8.2.28
PHP 8.1 earliest → < 8.1.32 8.1.32

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The 103 CVEs of PHP →
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