🛡️ CVE-2026-63221 — framework

🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-89 NVD
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CodeIgniter: SQL injection in Query Builder deleteBatch() when used with where() conditions

Impact

A SQL injection vulnerability exists in the Query Builder's deleteBatch() method. When deleteBatch() is used together with where() conditions, the bound values from the WHERE clause are substituted directly into the generated SQL with their escape flag ignored, so they are never escaped or quoted. If an application passes user-controlled input to where() before calling deleteBatch(), that input is interpreted as SQL rather than as a value, allowing SQL injection.

This affects only the deleteBatch() code path. Regular delete() operations escape where() binds correctly.

Patches

Upgrade to v4.7.4 or later.

Workarounds

If you cannot upgrade immediately:

  • Strictly validate and cast values (e.g. numeric IDs) before using them in conditions - though this does not fully protect string conditions.
  • Do not pass user-controlled input to where() when using deleteBatch().
  • For user-controlled conditions, use a normal delete() with Query Builder binds instead of deleteBatch().
  • Where possible, express required matching values through the batch data and onConstraint() rather than as separate user-controlled where() clauses.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity high, availability high.

Weakness class

CVE-2026-63221 is classified as CWE-89: SQL Injection. Untrusted input is concatenated into an SQL statement, letting an attacker change the query and reach data the request should not return.

Affected software

CVE-2026-63221 is recorded against 2 packages.

  • codeigniter4/framework (from 4.3.0 up to 4.7.4)
  • unknown

Timeline and source

Published on 7 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
github.com (Web)

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
CWE CWE-89
Public Exploit ✅ No
Source NVD
Published 2026-08-07
Updated 2026-08-12
Modified 2026-08-07
Fix URL N/A

Affected Packages

Software From version Fixed in
codeigniter4/framework 4.3.0 4.7.4
unknown — —

Similar Threats

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