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CVE-2026-73155 is an authorization flaw in CTI-Transmute affecting versions 1.4 and earlier. The comment reaction handler accepted an attacker-controlled comment identifier and passed it to the reaction-toggling logic after only checking that the identifier was syntactically valid and that the requested emoji was allowed. It did not verify whether the requesting authenticated user was authorized to view the target comment. As a result, comment-level visibility restrictions were not enforced for reaction operations. A user who could determine the identifier of a private, deleted, or otherwise inaccessible comment could add or remove emoji reactions on that comment despite lacking permission to access it. The fix retrieves the target comment, rejects missing or deleted comments, resolves the associated conversion object, and enforces a comment visibility authorization check before allowing the reaction change.
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Cross-references every affected SKU, including bundled OEM variants.
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