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CVE-2026-45073 high CVSS 7.3

SQL Injection in symfony/cache (CVE-2026-45073)

Summary

SQL injection in symfony/cache (CVE-2026-45073). Risk of unauthorized operations or information disclosure. Exploitable via AbstractAdapterTrait. Mitigation: upgrade to 8.0.12 or later.

Original description

The description as published by the source.

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:

DELETE FROM  WHERE  LIKE '%'

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 t…

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-45073 has been found in symfony/cache.
Attackers can target a specific entry point like AbstractAdapterTrait over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 7.3/10.
What to do: upgrade symfony/cache to 8.0.12 or later.
If unsure, ask your IT team or search "symfony/cache CVE-2026-45073" on the vendor's site.

CVE-2026-45073 (symfony/cache) — CWE-89 / CVSS v3 7.3
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: AbstractAdapterTrait / false / LIKE
Patched: 8.0.12 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

SQL injection (CWE-89) exists in symfony/cache. Attackers reach the vulnerable code path via AbstractAdapterTrait without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of symfony/cache. Attack surface: AbstractAdapterTrait / false / LIKE.

🔥 Severity

Severity: High (CVSS 7.3/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 8.0.12.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'symfony/cache' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'symfony/cache' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で symfony/cache を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade symfony/cache to 8.0.12

    ステージング環境で 8.0.12 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

composer symfony/cache
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.12"}]}]
composer symfony/symfony
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.12"}]}]
Packagist symfony/cache
[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0"},{"fixed":"8.0.12"}]}]
Packagist symfony/symfony
[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0"},{"fixed":"8.0.12"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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