Log in Start free

Vulnerability · Published Oct 9, 2026 · Assigned by GitHub_M

CVE-2026-107825OWASP Coraza WAF: ProcessURI silently drops QUERY_STRING and ARGS_GET on URI parse failure — defense-in-depth bypass for non-net/http integrations

Medium 4.0

In plain English

A medium-severity improper input validation in coraza from corazawaf. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.0Medium
Exploit odds (30 days)0.3%top 74.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.0, ProcessURI in internal/corazawaf/transaction.go handles a url.ParseRequestURI failure by retaining the raw URI but leaving QUERY_STRING, ARGS_GET, ARGS_GET_NAMES, and the GET-derived portion of ARGS empty. An unauthenticated attacker can place control bytes in a URI passed directly by integrations such as coraza-spoa, coraza-proxy-wasm, custom FFI hosts, or WASM hosts, causing Coraza to omit query parameters that the downstream integration may still process and allowing rules targeting those variables to be bypassed. The bundled coraza/v3/http integration is not affected because Go net/http rejects such malformed request targets before calling Coraza. This issue is fixed in version 3.8.0.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Gogithub.com/corazawaf/corazano fix listedGO-2026-6699
Gogithub.com/corazawaf/coraza/v2no fix listedGO-2026-6699
Gogithub.com/corazawaf/coraza/v33.8.0GHSA-x26q-wvhg-fh4m
Gogithub.com/corazawaf/coraza/v33.8.0GO-2026-6699

Affected products (as reported)

VendorProductVersions
corazawaf coraza >= 3.0.0, < 3.8.0

Weakness: CWE-20, CWE-436 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

References