Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-57584— Phalcon: Catastrophic backtracking (ReDoS) in the default Phalcon Router route lead to remote unauthenticated DoS

Quick assessment

Affected
phalcon cphalcon
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Phalcon Phalcon是Phalcon公司开源的一个以 C 扩展形式交付的高性能、全栈 PHP 框架，能显著降低资源消耗。 Phalcon 5.15.0之前版本存在资源管理错误漏洞，该漏洞源于默认路由器注册的内置路由中嵌套量词导致PCRE编译的正则表达式模式，使得攻击者可通过包含重复斜杠和解码换行符的特制路径触发灾难性回溯，从而造成CPU耗尽或路由匹配失败。

AI Predicted 7.5 Difficulty: Easy EPSS 0.52% · P43

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
phalcon cphalcon < 5.15.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-57584

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Phalcon: Catastrophic backtracking (ReDoS) in the default Phalcon Router route lead to remote unauthenticated DoS
Source: CVE Program / CVE List V5
Vulnerability Description
Phalcon is a high-performance, full-stack PHP framework. Prior to 5.15.0, every Phalcon MVC application built with a default router registers a built-in route whose compiled PCRE pattern contains the nested quantifier (/.), and the same construct is produced by the /:params placeholder and the CLI router. Phalcon\Mvc\Router::handle() matches this pattern against the attacker-controlled request URI on every request, so a crafted path such as one containing repeated slashes followed by decoded newlines can trigger catastrophic backtracking and cause CPU exhaustion or route-matching failure. This issue is fixed in version 5.15.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
Phalcon 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Phalcon Phalcon是Phalcon公司开源的一个以 C 扩展形式交付的高性能、全栈 PHP 框架，能显著降低资源消耗。 Phalcon 5.15.0之前版本存在资源管理错误漏洞，该漏洞源于默认路由器注册的内置路由中嵌套量词导致PCRE编译的正则表达式模式，使得攻击者可通过包含重复斜杠和解码换行符的特制路径触发灾难性回溯，从而造成CPU耗尽或路由匹配失败。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
phalcon cphalcon < 5.15.0 -

II. Public POCs for CVE-2026-57584

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-57584

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-57584 (3)

Vendor Advisories for CVE-2026-57584 (1)

IV. Related Vulnerabilities

Same product: cphalcon
Same vendor: phalcon
Same weakness: CWE-1333

V. Comments for CVE-2026-57584

No comments yet

Leave a comment