CVE-2026-3234— Mod_proxy_cluster: mod_proxy_cluster: response body corruption via crlf injection
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I. Basic Information for CVE-2026-3234
Vulnerability Information
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Vulnerability Title
Mod_proxy_cluster: mod_proxy_cluster: response body corruption via crlf injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in mod_proxy_cluster. This vulnerability, a Carriage Return Line Feed (CRLF) injection in the decodeenc() function, allows a remote attacker to bypass input validation. By injecting CRLF sequences into the cluster configuration, an attacker can corrupt the response body of INFO endpoint responses. Exploitation requires network access to the MCMP protocol port, but no authentication is needed.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对CRLF序列的转义处理不恰当(CRLF注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
mod_cluster 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mod_cluster是mod_cluster项目的一个基于httpd的负载均衡器。 mod_cluster存在注入漏洞，该漏洞源于decodeenc函数存在CRLF注入，可能导致绕过输入验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | - | cpe:/o:redhat:enterprise_linux:10 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 | |
| Red Hat | Red Hat JBoss Core Services | - | cpe:/a:redhat:jboss_core_services:1 | |
| Red Hat | Red Hat JBoss Core Services | - | cpe:/a:redhat:jboss_core_services:1 |
II. Public POCs for CVE-2026-3234
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|---|
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- 2442889 – (CVE-2026-3234) CVE-2026-3234 mod_proxy_cluster: mod_proxy_cluster: Response body corruption via CRLF injectionissue-trackingx_refsource_REDHAT
- https://nvd.nist.gov/vuln/detail/CVE-2026-3234
Same Patch Batch · Red Hat · 2026-03-12 · 4 CVEs total
| CVE-2026-3099 | 5.8 MEDIUM | Libsoup: libsoup: authentication bypass via digest authentication replay attack |
| CVE-2026-2376 | 4.9 MEDIUM | Mirror-registry: quay: quay: server-side request forgery via open redirect vulnerability i |
| CVE-2026-2366 | 3.1 LOW | Keycloak: keycloak: information disclosure via authorization bypass in admin api |
IV. Related Vulnerabilities
Same product: Red Hat Enterprise Linux 10
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Xorg: xwayland: x.org x server: information disclosure or de - CVE-2026-34000
Xwayland: xorg: x.org x server: information disclosure and d
Same vendor: Red Hat
- CVE-2026-42011
Gnutls: gnutls: security bypass due to incorrect name constr - CVE-2026-42010
Gnutls: gnutls: authentication bypass via nul character in u - CVE-2026-6420
Keylime: keylime: security bypass due to hardcoded tpm quote - CVE-2026-34956
Openvswitch: open vswitch: denial of service via malformed f - CVE-2026-34002
Xorg: xwayland: x.org x server: information disclosure or de
Same weakness: CWE-93
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Sandboxie-Plus privilege escalation via INI CRLF injection b
V. Comments for CVE-2026-3234
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