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CVE-2026-72811 is a critical SQL injection vulnerability in SiYuan backlink/mention search affecting versions through 3.7.2. The vulnerable search implementation constructs a SQLite full-text-search MATCH expression by concatenating client-supplied keywords and stored block metadata, including titles, names, aliases, and anchor text. It escapes double quotes but fails to safely handle single quotes, allowing an attacker to terminate the intended SQL string literal. The affected connection uses the primary read-write database handle and supports stacked statements, enabling arbitrary SQL execution. The issue supports both direct injection through a supplied search keyword and second-order injection when malicious document metadata is later processed by backlink search. SiYuan 3.7.4 replaces unsafe query construction with parameterized values.
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A critical unauthenticated SQL injection in SiYuan's backlink-search API. Exploitation permits arbitrary SQL commands against the siyuan.db SQLite database, exposing and modifying private notebook content, configuration, access tokens, and integration keys. SQLite ATTACH DATABASE may enable arbitrary file writes; where the service has elevated permissions, this can lead to remote code execution.
A SQL injection vulnerability in SiYuan kernel backlink/mention search. Unescaped single quotes in a publish-surface keyword or stored document title, name, alias, or anchor text can break out of a SQL literal. The query executes using the main read-write siyuan.db handle through a statement-stacking-capable SQLite driver, enabling arbitrary cross-notebook reads and potentially writes or ATTACH operations.
A critical SQL injection vulnerability in SiYuan's backlink/mention search query that allows arbitrary SQL execution and cross-notebook read/write access.
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