# CVE-2024-1019: modsecurity: ModSecurity / libModSecurity 3.0.0 to 3.0.11 is affected by a WAF bypass for path-based payloads submitted via specia...

CVE-2024-1019 is fixed in modsecurity on 1 platform, first by DEBIAN-CVE-2024-1019, released January 30, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-1019
- Priority: High
- CVSS: 8.6 (high)
- EPSS: 0.0069
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 30, 2024

## Description

ModSecurity / libModSecurity 3.0.0 to 3.0.11 is affected by a WAF bypass for path-based payloads submitted via specially crafted request URLs. ModSecurity v3 decodes percent-encoded characters present in request URLs before it separates the URL path component from the optional query string component. This results in an impedance mismatch versus RFC compliant back-end applications. The vulnerability hides an attack payload in the path component of the URL from WAF rules inspecting it. A back-end may be vulnerable if it uses the path component of request URLs to construct queries. Integrators and users are advised to upgrade to 3.0.12. The ModSecurity v2 release line is not affected by this vulnerability.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | modsecurity Debian 13.5 (trixie) | 3.0.12-1 | [DEBIAN-CVE-2024-1019](https://patchblox.com/security/data/fix/linux/debian-cve-2024-1019.md) | Jan 30, 2024 |
| Linux | modsecurity Debian 14 | 3.0.12-1 | [DEBIAN-CVE-2024-1019](https://patchblox.com/security/data/fix/linux/debian-cve-2024-1019.md) | Jan 30, 2024 |

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