OWASP Coraza WAF has parser confusion which leads to wrong URI in `REQUEST_FILENAME`
Priority MEDIUM 58CWE-706Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. Prior to 3.3.3, if a request is made on an URI starting with //, coraza will set a wrong value in REQUEST_FILENAME. For example, if the URI //bar/uploads/foo.php?a=b is passed to coraza: , REQUEST_FILENAME will be set to /uploads/foo.php. This can lead to a rules bypass. This vulnerability is fixed in 3.3.3.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00319 24th percentileScored 2026-11-07
Fix Fixed coraza (corazawaf): 3.3.3github.com/jptosso/coraza-waf (Go): 3.3.3+1 more product
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| corazawaf | coraza | before 3.3.3 | 3.3.3 | Patch available | CNA |
| — | github.com/jptosso/coraza-waf (Go) | before 3.3.3 | 3.3.3 | Patch available | GHSA-q9f5-625g-xm39 |
| — | github.com/corazawaf/coraza/v3 (Go) | before 3.3.3 | 3.3.3 | Patch available | GHSA-q9f5-625g-xm39 |
- coraza Vendorcorazawaf Affected before 3.3.3 Fixed in 3.3.3 Patch available CNA
- github.com/jptosso/coraza-waf (Go) Vendor— Affected before 3.3.3 Fixed in 3.3.3 Patch available GHSA-q9f5-625g-xm39
- github.com/corazawaf/coraza/v3 (Go) Vendor— Affected before 3.3.3 Fixed in 3.3.3 Patch available GHSA-q9f5-625g-xm39
Remediation
- Fix · CNA coraza (corazawaf) Fixed in 3.3.3
- Fix · GHSA-q9f5-625g-xm39 github.com/jptosso/coraza-waf (Go) Fixed in 3.3.3 Advisory →
- Fix · GHSA-q9f5-625g-xm39 github.com/corazawaf/coraza/v3 (Go) Fixed in 3.3.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-29914
- 2026-10-03 Alias added: GHSA-q9f5-625g-xm39
References
More corazawaf vulnerabilities
- TI-2026-69592 Uncontrolled recursion in Coraza WAF JSON parsing crashes the process CVSS 3.1HIGH 7.5
- TI-2026-71270 Coraza WAF silently drops arguments at ArgumentLimit, enabling rule bypass CVSS 3.1HIGH 7.2
- TI-2026-71268 Off-by-one error in OWASP Coraza jsDecode enables WAF rule bypass CVSS 3.1MEDIUM 5.8
- TI-2026-78712 Coraza JSON key collision lets SQL injection evade WAF rules CVSS 4.0MEDIUM 6.9
- TI-2026-78714 Multipart filename* charset handling bypasses Coraza FILES rules CVSS 4.0MEDIUM 6.3
- TI-2026-69596 Uncontrolled recursion in Coraza WAF JSON processing exhausts CPU CVSS 3.1MEDIUM 5.9
Sources
- CVE-2025-29914 · CVE Program
- CVE-2025-29914 · NVD
- FIRST EPSS
- GHSA-q9f5-625g-xm39 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences