Signal is active with 3 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 7.3.0-BETA1 until 7.4.12 and 8.0.12, the JsonPath component compiles attacker-controlled match() and search() filter patterns directly into preg_match() without a length cap, i-regexp restriction, or bounded backtracking, allowing catastrophic-backtracking expressions to pin worker CPU and cause denial of service. This issue is fixed in versions 7.4.12 and 8.0.12.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
CVE-2026-45756: attacker-controlled regex in Symfony JsonPath filters (ReDoS) https://daubois.dev/blog/cve-2026-45756-symfony-jsonpath-redos/
Post summary
The text announces CVE-2026-45756 as a ReDoS vulnerability involving attacker-controlled regex in Symfony JsonPath filters. It provides initial technical detail but does not mention PoC, exploit code, active exploitation, or patching.
CVE-2026-45756: attacker-controlled regex in Symfony JsonPath filters (ReDoS) https://daubois.dev/blog/cve-2026-45756-symfony-jsonpath-redos/
Post summary
The text announces CVE-2026-45756 and describes a ReDoS vulnerability in Symfony JsonPath filters caused by attacker-controlled regex, linking to a blog post for further details.
تعبير نظامي واحد داخل JsonPath قد يتحول إلى نقطة تعطيل للخدمة. CVE-2026-45756 يشير إلى خطر ReDoS عند السماح للمهاجم بالتحكم في regex داخل فلاتر Symfony JsonPath. الأهمية هنا أن معالجة regex غير الموثوق قد تؤدي إلى استهلاك مرتفع للمعالج بسبب أنماط مطابقة مكلفة، ما يجعل التوفر Availability جزءاً من سطح الهجوم. عملياً، يجب مراجعة أي استخدام لفلاتر JsonPath يستقبل مدخلات من المستخدم، تقييد أو منع regex غير الموثوق، ومتابعة تفاصيل التصحيح الرسمية للإصدارات المتأثرة. كيف يمكن تقليل مخاطر ReDoS في مسارات البحث والتصفية دون كسر المرونة التي توفرها JsonPath؟ A single attacker-controlled regex in a JsonPath filter can become an availability risk. CVE-2026-45756 highlights a ReDoS issue in Symfony JsonPath filters where untrusted regex input may trigger expensive pattern evaluation. This matters because ReDoS is often less visible than injection bugs, but it can still lead to CPU exhaustion and service degradation. For teams using Symfony JsonPath with user-controlled filters, the practical step is to review input handling, restrict unsafe regex patterns, and follow the official advisory for affected and fixed versions. What safeguards should be standard when exposing JsonPath-style filtering to untrusted users? https://daubois.dev/blog/cve-2026-45756-symfony-jsonpath-redos/ #Symfony #ReDoS #CVE
Post summary
The tweet discloses CVE-2026-45756 as a ReDoS vulnerability in Symfony JsonPath filters triggered by untrusted regex input, explaining the risk of CPU exhaustion, and advises reviewing input handling and following official advisories without naming a specific patch or reporting active exploitation.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | sensiolabs | symfony | - | - | - |