CVE-2026-41504 Details
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.
A log forgery vulnerability has been identified in the OWASP Coraza WAF, specifically in versions 3.0.0 prior to 3.8.0. The issue arises in the Native audit-log formatter, which fails to properly escape carriage return and line feed characters in attacker-controlled request and response data. This oversight allows for the injection of fake log entries that can mislead operators and disrupt line-oriented SIEM processes. The vulnerability is exploitable by manipulating request or response bodies, headers, error messages, or matched-rule data.
Users can upgrade to OWASP Coraza WAF version 3.8.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 12, 2026CISA-ADP
Assessed Oct 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/corazawaf/coraza/security/advisories/GHSA-prpw-wwv7-xjjr | CISA-ADP | AdvisoryRemedyVendor |
| https://github.com/corazawaf/coraza/commit/a3079325547c7c1e08522aed4d6468f25d080e25 | [email protected] | Source CodeVendor |
| https://github.com/corazawaf/coraza/releases/tag/v3.8.0 | [email protected] | Release NotesVendor |
| https://github.com/corazawaf/coraza/security/advisories/GHSA-prpw-wwv7-xjjr | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-117 | Improper Output Neutralization for Logs | [email protected] |
| CWE-93 | Improper Neutralization of CRLF Sequences ('CRLF Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| OWASP Coraza WAF | >= 3.0.0, <= 3.7.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 13, 2026 | CVE Modified | CISA-ADP |
| Oct 12, 2026 | New CVE Received | [email protected] |
Volerion