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CVE-2026-51303 is a use-after-free vulnerability in the core parsing component of SQLite 3.41. The flaw occurs when an ExprList object is freed through sqlite3ExprListDelete and subsequently accessed through a dangling pointer during SQL statement parsing. An attacker able to supply specially crafted SQL queries can trigger the vulnerable condition while the application parses the statement. The resulting memory-safety error can lead to process instability, memory disclosure, and potentially arbitrary code execution depending on allocator behavior, memory layout, and surrounding exploit conditions.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.