SQLite is ubiquitous; a remote RCE UAF in core parser affects many apps/platforms and is high-impact and newsworthy.
CVE-2026-51303
Use-after-free in SQLite 3.41 parser allows remote RCE/DoS via crafted SQL.
Is CVE-2026-51303 being exploited?
Not confirmed. CVE-2026-51303 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-51303?
CVE-2026-51303 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-51303?
Yes. A fix has been recorded for CVE-2026-51303. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-51303 affect?
CVE-2026-51303 affects SQLite 3.41, Applications embedding SQLite 3.41, Mobile apps using SQLite, Desktop apps using SQLite, and 1 further product or version. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-51303?
Update to patched SQLite release or apply vendor patches; block untrusted SQL and sandbox DB access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution, sensitive memory disclosure, or denial-of-service by sending crafted SQL that triggers a use-after-free in the SQLite parser.
Immediate action required