CVE-2026-63221
SQL injection in CodeIgniter deleteBatch() via unescaped where() binds.
Is CVE-2026-63221 being exploited?
Not confirmed. CVE-2026-63221 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. EPSS currently estimates a 0.37% probability of exploitation in the next 30 days.
How severe is CVE-2026-63221?
CVE-2026-63221 is rated Critical with a CVSS score of 9.4. 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-2026-63221?
Yes. A fix has been recorded for CVE-2026-63221. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-63221 affect?
CVE-2026-63221 affects CodeIgniter 4.3.0 - 4.7.3, PHP web apps using CodeIgniter Query Builder deleteBatch(). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-63221?
Upgrade to CodeIgniter 4.7.4 now; audit and sanitize DB-bound inputs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
SQL injection via deleteBatch(): attacker can run arbitrary SQL, delete/modify/exfiltrate data and possibly achieve RCE on DBs that allow stacked queries.
Immediate action required
- affected>= 4.3.0 and < 4.7.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.