CVE-2026-3633— Libsoup: libsoup: header and http request injection via crlf injection
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I. Basic Information for CVE-2026-3633
Vulnerability Information
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Vulnerability Title
Libsoup: libsoup: header and http request injection via crlf injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in libsoup. A remote attacker, by controlling the method parameter of the `soup_message_new()` function, could inject arbitrary headers and additional request data. This vulnerability, known as CRLF (Carriage Return Line Feed) injection, occurs because the method value is not properly escaped during request line construction, potentially leading to HTTP request injection.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L
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
libsoup 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libsoup是GNOME项目的一款GNOME的HTTP客户端/服务器库。 libsoup存在注入漏洞，该漏洞源于soup_message_new函数的方法参数未在请求行构造期间正确转义，可能导致远程攻击者注入任意标头和额外请求数据，造成CRLF注入。
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 6 | - | cpe:/o:redhat:enterprise_linux:6 | |
| Red Hat | Red Hat Enterprise Linux 7 | - | cpe:/o:redhat:enterprise_linux:7 | |
| Red Hat | Red Hat Enterprise Linux 8 | - | cpe:/o:redhat:enterprise_linux:8 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 |
II. Public POCs for CVE-2026-3633
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|---|
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- 2445128 – (CVE-2026-3633) CVE-2026-3633 libsoup: libsoup: Header and HTTP request injection via CRLF injectionissue-trackingx_refsource_REDHAT
- https://nvd.nist.gov/vuln/detail/CVE-2026-3633
Same Patch Batch · Red Hat · 2026-03-17 · 5 CVEs total
| CVE-2026-4324 | 5.4 MEDIUM | Rubygem-katello: katello: denial of service and potential information disclosure via sql i |
| CVE-2026-4271 | 5.3 MEDIUM | Libsoup: libsoup: denial of service via use-after-free in http/2 server |
| CVE-2026-3632 | 3.9 LOW | Libsoup: libsoup: http smuggling and server-side request forgery via malformed hostnames |
| CVE-2026-3634 | 3.9 LOW | Libsoup: libsoup: http header injection and response splitting via crlf injection in conte |
IV. Related Vulnerabilities
Same product: Red Hat Enterprise Linux 10
- 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-2026-34002
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
- CVE-2026-42257
net-imap: Command Injection via "raw" arguments to multiple - CVE-2026-41570
PHPUnit: Argument injection via newline in PHP INI values fo - CVE-2026-41417
Netty vulnerable to HTTP request smuggling and RTSP request - CVE-2026-39849
Pi-hole FTL remote code execution via newline injection in d - CVE-2026-34458
Sandboxie-Plus privilege escalation via INI CRLF injection b
V. Comments for CVE-2026-3633
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