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CVE-2026-41504— OWASP Coraza WAF: Native audit-log format allows CRLF injection and log forgery via request body and header fields

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 3.0.0 至 3.8.0 版本中， 中的 Native 审计日志格式器在未对回车符（carriage returns）或换行符（line feeds）进行转义的情况下，直接写入了受攻击者影响的请求和响应字段。当启用 配置时，注入的换行符会在事务记录中生成伪造的日志行。如果攻击者能够控制请求或响应体、头部、错误消息或匹配规则中的数据，便可以在审计日志中注入回车符和换行符，这些字符会被解析为事务

CVSS 5.8 · Medium EPSS 0.39% · P31

Affected Version Matrix 1

VendorProduct Version RangeStatus
corazawaf coraza >= 3.0.0, < 3.8.0 affected
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I. Basic Information for CVE-2026-41504

Vulnerability Information
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Vulnerability Title
OWASP Coraza WAF: Native audit-log format allows CRLF injection and log forgery via request body and header fields
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 3.8.0, the Native audit-log formatter in internal/auditlog/formats.go writes attacker-influenced request and response fields without neutralizing carriage returns or line feeds. When SecAuditLogFormat Native is enabled, injected line breaks can create forged lines inside a transaction record. An attacker who controls request or response body, header, error-message, or matched-rule data can inject carriage returns and line feeds that appear as forged audit lines within a transaction record. The forged content can mislead operators and line-oriented SIEM processing, although the unpredictable transaction boundary prevents straightforward impersonation of a separate complete session. This issue is fixed in version 3.8.0.
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:N
Source: CVE Program / CVE List V5
Vulnerability Type
对CRLF序列的转义处理不恰当(CRLF注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
corazawaf coraza >= 3.0.0, < 3.8.0 -

II. Public POCs for CVE-2026-41504

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III. Intelligence Information for CVE-2026-41504

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Patches & Fixes for CVE-2026-41504 (1)

Vendor Advisories for CVE-2026-41504 (1)

Vendor Pages for CVE-2026-41504 (1)

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

CVE-2026-41510 7.2 HIGH OWASP Coraza WAF: Silent argument drop at ArgumentLimit allows bypass of ARGS-targeted rul
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-93

V. Comments for CVE-2026-41504

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