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CVE-2026-52762 is a stored server-side template injection vulnerability in YesWiki Bazar semantic templates affecting versions prior to 4.6.6. An authenticated administrator can place malicious Twig template expressions into Bazar semantic template fields. When those stored templates are later processed by public semantic endpoints, the attacker-controlled Twig code is rendered on the server, resulting in server-side execution of unintended template logic. Validated exploitation demonstrated escalation from template execution to operating-system command execution and full compromise of the underlying server.
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What an attacker gets, and what they’ve been doing with it.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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