PT-2026-44142 · Packagist · Symfony/Cache+1
Published
2026-05-27
·
Updated
2026-05-27
·
CVE-2026-45073
CVSS v4.0
5.0
Medium
| Vector | AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:U |
Description
SymfonyComponentCacheAdapterPdoAdapter 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: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 for branch 5.4.
Credits
Symfony would like to thank secsys codex for reporting the issue and Nicolas Grekas for fixing it.
Exploit
Fix
SQL injection
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Weakness Enumeration
Related Identifiers
Affected Products
Symfony/Cache
Symfony/Symfony