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CVE-2026-41510— OWASP Coraza WAF: Silent argument drop at ArgumentLimit allows bypass of ARGS-targeted rules via parameter flooding

Quick assessment

Affected
corazawaf coraza
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.

OWASP Coraza WAF 是一个与 ModSecurity 兼容的 Go 语言 Web 应用防火墙（WAF）库。在版本 3.0.0 至 3.8.1 之间， 中存在一个缺陷：当请求参数数量超过 配置限制时，Coraza 会静默丢弃超限后的参数；与此同时， 在处理 时并未强制执行该限制。 当未认证的攻击者发送超过 限制的参数数量，或提供超出配置的参数数量和展平（flattening）预算限制的请求体时，即可触发此漏洞。攻击者可以通过向请求中注入大量参数，使超出部分在安全规则检查前被静默排除在 、 、 、 、 或

CVSS 7.2 · High
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I. Basic Information for CVE-2026-41510

Vulnerability Information
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Vulnerability Title
OWASP Coraza WAF: Silent argument drop at ArgumentLimit allows bypass of ARGS-targeted rules via parameter flooding
Source: CVE Program / CVE List V5
Vulnerability Description
OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.1, Coraza silently drops arguments after SecArgumentsLimit in internal/corazawaf/transaction.go, while internal/bodyprocessors/urlencoded.go writes ARGS_POST without enforcing the cap. The flaw is triggered when an unauthenticated attacker sends more arguments than SecArgumentsLimit or supplies bodies that expand beyond the configured argument and flattening budgets. An unauthenticated attacker can flood requests with arguments so excess values are silently omitted from ARGS, ARGS_GET, ARGS_NAMES, ARGS_GET_NAMES, ARGS_POST, or ARGS_PATH before security rules inspect them; affected urlencoded and JSON processing can also consume excessive memory. The omission can bypass WAF rules protecting the downstream application, and unbounded or amplified argument processing can cause memory consumption and service degradation. This issue is fixed in version 3.8.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
corazawaf coraza >= 3.0.0, < 3.8.1 -

II. Public POCs for CVE-2026-41510

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III. Intelligence Information for CVE-2026-41510

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Patches & Fixes for CVE-2026-41510 (1)

Vendor Advisories for CVE-2026-41510 (1)

Vendor Pages for CVE-2026-41510 (1)

Same Patch Batch · corazawaf · 2026-10-12 · 4 CVEs total

CVE-2026-41504 5.8 MEDIUM OWASP Coraza WAF: Native audit-log format allows CRLF injection and log forgery via reques
CVE-2026-41508 5.8 MEDIUM OWASP Coraza WAF: Truncated multipart body bypasses MULTIPART_STRICT_ERROR (rule 200003) v
CVE-2026-104774 5.8 MEDIUM OWASP Coraza WAF: jsDecode Off-by-One in Octal Escape Handling Enables WAF Bypass

IV. Related Vulnerabilities

Same product: coraza
Same vendor: corazawaf
Same weakness: CWE-693

V. Comments for CVE-2026-41510

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