CVE-2026-45073

Symfony Vulnerable to SQL Injection in PdoAdapter::doClear() via Unsanitized $prefix

發布日:2026/5/27修改日:2026/5/27
也稱為:GHSA-6qh9-h6wf-jgqc

描述

### Description `Symfony\Component\Cache\Adapter\PdoAdapter` is the PDO-backed cache adapter. Its `clear($prefix)` method (inherited from `AbstractAdapterTrait`) is documented to delete cache items whose key starts with `$prefix`. In the non-versioning code path, the caller-supplied `$prefix` is concatenated into `$namespace = $this->namespace.$prefix` and passed to `PdoAdapter::doClear()`, which builds: ```sql DELETE FROM <table> WHERE <id_col> LIKE '<namespace>%' ``` The value is interpolated directly into the SQL text and executed with `PDO::exec()`: `$namespace` is not bound. A caller able to influence `$prefix` can break out of the literal and inject SQL, expanding deletion scope from the intended prefix to arbitrary rows, or otherwise reshape query semantics. Most applications don't expose `clear($prefix)` to untrusted input directly, but the contract of the method is to safely accept any prefix string, so the lack of escaping is a defect of the adapter itself. ### Resolution `AbstractAdapterTrait::clear()` now rejects any `$prefix` containing characters outside `[-+.A-Za-z0-9]`: when an invalid prefix is supplied, the method logs a warning and returns `false` instead of reaching the SQL layer. This blocks quotes, `%`, null bytes and other characters that would let an attacker break out of the `LIKE` literal. The patch for this issue is available [here](https://github.com/symfony/symfony/commit/ec50b799d79ebe24561f29351c1efcb6da95c9b1) for branch 5.4. ### Credits Symfony would like to thank secsys_codex for reporting the issue and Nicolas Grekas for fixing it.

受影響套件(3)

CVSS 分數

來源版本嚴重程度向量
osvCVSS 4.0—CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:U

參考連結(7)