CWE-113
Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
Description
The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers.
Hierarchy (View 1000)
Related attack patterns (CAPEC)
CAPEC-105 · CAPEC-31 · CAPEC-34 · CAPEC-85
CVEs mapped to this weakness (131)
page 7 of 7| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2026-42874 | Low | 0.17 | 3.7 | 0.00 | May 11, 2026 | Microdot is a minimalistic Python web framework. Prior to 2.6.1, the Response.set_cookie() method does not sanitize its string arguments, and in particular will not detect the presence of the \r\n sequence in them. This can be a potential source of header injection attacks. For… | ||
| CVE-2024-45687 | Low | 0.16 | — | 0.00 | Jan 21, 2025 | Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') vulnerability in Payara Platform Payara Server (Grizzly, REST Management Interface modules), Payara Platform Payara Micro (Grizzly modules) allows Manipulating State, Identity… | ||
| CVE-2025-0825 | Med | 0.00 | 5.3 | 0.00 | Feb 4, 2025 | cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters ("\r\n") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more. | ||
| CVE-2023-42450 | Med | 0.00 | 5.4 | 0.00 | Sep 19, 2023 | Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 4.2.0-beta1 and prior to version 4.2.0-rc2, by crafting specific input, attackers can inject arbitrary data into HTTP requests issued by Mastodon. This can be used to perform confused… | ||
| CVE-2018-18837 | Med | 0.00 | 6.1 | 0.02 | Jun 18, 2019 | An issue was discovered in Netdata 1.10.0. HTTP Header Injection exists via the api/v1/data filename parameter because of web_client_api_request_v1_data in web/api/web_api_v1.c. | ||
| CVE-2015-0733 | 0.00 | — | 0.02 | May 30, 2015 | CRLF injection vulnerability in the HTTP Header Handler in Digital Broadband Delivery System in Cisco Headend System Release allows remote attackers to inject arbitrary HTTP headers, and conduct HTTP response splitting attacks or cross-site scripting (XSS) attacks, via a crafted… | |||
| CVE-2014-0099 | 0.00 | — | 0.09 | May 31, 2014 | Integer overflow in java/org/apache/tomcat/util/buf/Ascii.java in Apache Tomcat before 6.0.40, 7.x before 7.0.53, and 8.x before 8.0.4, when operated behind a reverse proxy, allows remote attackers to conduct HTTP request smuggling attacks via a crafted Content-Length HTTP… | |||
| CVE-2012-6072 | 0.00 | — | 0.02 | Feb 24, 2013 | CRLF injection vulnerability in Jenkins before 1.491, Jenkins LTS before 1.480.1, and Jenkins Enterprise 1.424.x before 1.424.6.13, 1.447.x before 1.447.4.1, and 1.466.x before 1.466.10.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response… | |||
| CVE-2011-4203 | 0.00 | — | 0.01 | Dec 22, 2011 | CRLF injection vulnerability in calendar/set.php in the Calendar component in Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, 2.1.x before 2.1.3, and 2.2 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via vectors involving… | |||
| CVE-2009-1149 | 0.00 | — | 0.01 | Mar 26, 2009 | CRLF injection vulnerability in bs_disp_as_mime_type.php in the BLOB streaming feature in phpMyAdmin before 3.1.3.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via the (1) c_type and possibly (2) file_type parameters. | |||
| CVE-2007-5595 | 0.00 | — | 0.02 | Oct 19, 2007 | CRLF injection vulnerability in the drupal_goto function in includes/common.inc Drupal 4.7.x before 4.7.8 and 5.x before 5.3 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors. |
- risk 0.17cvss 3.7epss 0.00
Microdot is a minimalistic Python web framework. Prior to 2.6.1, the Response.set_cookie() method does not sanitize its string arguments, and in particular will not detect the presence of the \r\n sequence in them. This can be a potential source of header injection attacks. For…
- risk 0.16cvss —epss 0.00
Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') vulnerability in Payara Platform Payara Server (Grizzly, REST Management Interface modules), Payara Platform Payara Micro (Grizzly modules) allows Manipulating State, Identity…
- risk 0.00cvss 5.3epss 0.00
cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters ("\r\n") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.
- risk 0.00cvss 5.4epss 0.00
Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 4.2.0-beta1 and prior to version 4.2.0-rc2, by crafting specific input, attackers can inject arbitrary data into HTTP requests issued by Mastodon. This can be used to perform confused…
- risk 0.00cvss 6.1epss 0.02
An issue was discovered in Netdata 1.10.0. HTTP Header Injection exists via the api/v1/data filename parameter because of web_client_api_request_v1_data in web/api/web_api_v1.c.
- CVE-2015-0733May 30, 2015risk 0.00cvss —epss 0.02
CRLF injection vulnerability in the HTTP Header Handler in Digital Broadband Delivery System in Cisco Headend System Release allows remote attackers to inject arbitrary HTTP headers, and conduct HTTP response splitting attacks or cross-site scripting (XSS) attacks, via a crafted…
- CVE-2014-0099May 31, 2014risk 0.00cvss —epss 0.09
Integer overflow in java/org/apache/tomcat/util/buf/Ascii.java in Apache Tomcat before 6.0.40, 7.x before 7.0.53, and 8.x before 8.0.4, when operated behind a reverse proxy, allows remote attackers to conduct HTTP request smuggling attacks via a crafted Content-Length HTTP…
- CVE-2012-6072Feb 24, 2013risk 0.00cvss —epss 0.02
CRLF injection vulnerability in Jenkins before 1.491, Jenkins LTS before 1.480.1, and Jenkins Enterprise 1.424.x before 1.424.6.13, 1.447.x before 1.447.4.1, and 1.466.x before 1.466.10.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response…
- CVE-2011-4203Dec 22, 2011risk 0.00cvss —epss 0.01
CRLF injection vulnerability in calendar/set.php in the Calendar component in Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, 2.1.x before 2.1.3, and 2.2 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via vectors involving…
- CVE-2009-1149Mar 26, 2009risk 0.00cvss —epss 0.01
CRLF injection vulnerability in bs_disp_as_mime_type.php in the BLOB streaming feature in phpMyAdmin before 3.1.3.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via the (1) c_type and possibly (2) file_type parameters.
- CVE-2007-5595Oct 19, 2007risk 0.00cvss —epss 0.02
CRLF injection vulnerability in the drupal_goto function in includes/common.inc Drupal 4.7.x before 4.7.8 and 5.x before 5.3 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors.