7.5

CVE-2026-5032

W3 Total Cache <= 2.9.3 - Unauthenticated Security Token Exposure via User-Agent Header

W3 Total Cache <= 2.9.3 - Unauthenticated Security Token Exposure via User-Agent Header

The W3 Total Cache plugin for WordPress is vulnerable to information exposure in all versions up to, and including, 2.9.3. This is due to the plugin bypassing its entire output buffering and processing pipeline when the request's User-Agent header contains "W3 Total Cache", which causes raw mfunc/mclude dynamic fragment HTML comments — including the W3TC_DYNAMIC_SECURITY security token — to be rendered in the page source. This makes it possible for unauthenticated attackers to discover the value of the W3TC_DYNAMIC_SECURITY constant by sending a crafted User-Agent header to any page that contains developer-placed dynamic fragment tags, granted the site has the fragment caching feature enabled. With the leaked W3TC_DYNAMIC_SECURITY token, an attacker can craft valid mfunc tags to execute arbitrary PHP code on the server, achieving remote code execution.
Mögliche Gegenmaßnahme
W3 Total Cache: Update to version 2.9.4, or a newer patched version
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellerboldgrid
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Produkt W3 Total Cache
Default Statusunaffected
Version <= 2.9.3
Version 0
Status affected
VulnDex Vulnerability Enrichment
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Weitere Schwachstelleninformationen
SystemWordPress Plugin
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Produkt W3 Total Cache
Version *-2.9.3
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.06% 0.197
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security@wordfence.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.