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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2023-40586— go package github.com/corazawaf/coraza is vulnerable to denial of service

Quick assessment

Affected
corazawaf coraza
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OWASP Coraza WAF是Coraza开源的一个 golang modsecurity 兼容的 Web 应用程序防火墙库。 OWASP Coraza WAF 3.0.0版本存在资源管理错误漏洞，该漏洞源于滥用log.Fatalf，导致使用coraza的应用程序在收到攻击者精心设计的请求后崩溃。

CVSS 7.5 · High EPSS 0.72% · P54

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2023-40586

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
go package github.com/corazawaf/coraza is vulnerable to denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. Due to the misuse of `log.Fatalf`, the application using coraza crashed after receiving crafted requests from attackers. The application will immediately crash after receiving a malicious request that triggers an error in `mime.ParseMediaType`. This issue was patched in version 3.0.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
OWASP Coraza WAF 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OWASP Coraza WAF是Coraza开源的一个 golang modsecurity 兼容的 Web 应用程序防火墙库。 OWASP Coraza WAF 3.0.0版本存在资源管理错误漏洞，该漏洞源于滥用log.Fatalf，导致使用coraza的应用程序在收到攻击者精心设计的请求后崩溃。
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
corazawaf coraza < 3.0.1 -

II. Public POCs for CVE-2023-40586

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9238 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2023-40586

请登录查看更多情报信息。

Patches & Fixes for CVE-2023-40586 (1)

Vendor Advisories for CVE-2023-40586 (1)

IV. Related Vulnerabilities

Same product: coraza
Same vendor: corazawaf
Same weakness: CWE-400