CVE-2026-41504 json
OWASP Coraza WAF: Native audit-log format allows CRLF injection and log forgery via request body and header fields
published 2026-10-06 33 d ago modified 2026-10-20 20 d ago also GHSA-prpw-wwv7-xjjr , GO-2026-6669 , EUVD-2026-97826
- cvss
- 5.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/corazawaf/coraza/v3 3.8.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 26 d ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/corazawaf/coraza/security/advisories/GHSA-prpw-wwv7-xjjr referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
| GitHub | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/corazawaf/coraza/v3 | >=3.0.0, <3.8.0 |
3.8.0 |
| go | github.com/corazawaf/coraza | all versions |
no fix listed |
| go | github.com/corazawaf/coraza/v2 | all versions |
no fix listed |
Affected products
- corazawaf coraza
Classification
References
Sources
- CVE List CVE-2026-41504
- GitHub Advisory GHSA-prpw-wwv7-xjjr
- NVD CVE-2026-41504
- OSV GO-2026-6669
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