Weakness (CWE)
CWE-93: Improper Neutralization of CRLF Sequences
The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.
How to prevent it (2 mitigations)
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Implementation
Avoid using CRLF as a special sequence.
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Implementation
Appropriately filter or quote CRLF sequences in user-controlled input.
Source: MITRE CWE-93
284 results · Feed
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Medium 5.3
Ritlabs TinyWeb Server Request crlf injection
A security vulnerability has been detected in Ritlabs TinyWeb Server 1.94. This vulnerability affects unknown code of the component Request Handler. The manipulation with the input %0D%0A leads to crlf injection. It is possible to initiate the attack remotely…
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Critical 9.7
Arbitrary code execution due to improper sanitization of web app properties in PWAsForFirefox
PWAsForFirefox is a tool to install, manage and use Progressive Web Apps (PWAs) in Mozilla Firefox. Due to improper sanitization of web app properties (such as name, description, shortcuts), web apps were able to inject additional lines into XDG Desktop Entri…
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High 7.5
Multiple vulnerabilities in Rejetto's Http File Server
The software does not neutralize or incorrectly neutralizes certain characters before the data is included in outgoing HTTP headers. The inclusion of invalidated data in an HTTP header allows an attacker to specify the full HTTP response represented by the br…
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High 8.2CVE-2024-20337 EPSS 30%
A vulnerability in the SAML authentication process of Cisco Secure Client could allow an unauthenticated, remote attack…
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Medium 5.3
aiohttp's ClientSession is vulnerable to CRLF injection via method
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Improper validation makes it possible for an attacker to modify the HTTP request (e.g. insert a new header) or even create a new HTTP request if the attacker controls the HTTP met…
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Medium 6.1
Improper Neutralization of CRLF Sequences in ManageEngine Desktop Central
A CRLF injection vulnerability has been found in ManageEngine Desktop Central affecting version 9.1.0. This vulnerability could allow a remote attacker to inject arbitrary HTTP headers and perform HTTP response splitting attacks via the fileName parameter in …
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Medium 6.1
Improper Neutralization of CRLF Sequences in ManageEngine Desktop Central
A CRLF injection vulnerability has been found in ManageEngine Desktop Central affecting version 9.1.0. This vulnerability could allow a remote attacker to inject arbitrary HTTP headers and perform HTTP response splitting attacks via the fileName parameter in …
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Medium 5.4
All versions of the package ithewei/libhv are vulnerable to CRLF Injection when untrusted user input is used to set req…
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Medium 5.4
All versions of the package drogonframework/drogon are vulnerable to CRLF Injection when untrusted user input is used t…
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Medium 5.7
AMI SPx contains a vulnerability in the BMC where an Attacker may cause an improper neutralization of CRLF sequences in…
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High 7.5
Versions of the package yhirose/cpp-httplib before 0.12.4 are vulnerable to CRLF Injection when untrusted user input is…
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Medium 6.5
CRLF Injection in Nodejs ‘undici’ via host
Undici is an HTTP/1.1 client for Node.js. Starting with version 2.0.0 and prior to version 5.19.1, the undici library does not protect `host` HTTP header from CRLF injection vulnerabilities. This issue is patched in Undici v5.19.1. As a workaround, sanitize t…
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High 7.5
Async HTTP Client has CRLF Injection vulnerability in HTTP request headers
Versions of Async HTTP Client prior to 1.13.2 are vulnerable to a form of targeted request manipulation called CRLF injection. This vulnerability was the result of insufficient validation of HTTP header field values before sending them to the network. Users a…
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Medium 5.3
CRLF Injection in Nodejs ‘undici’ via Content-Type
undici is an HTTP/1.1 client, written from scratch for Node.js.`=< undici@5.8.0` users are vulnerable to _CRLF Injection_ on headers when using unsanitized input as request headers, more specifically, inside the `content-type` header. Example: ``` import { re…
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Low 3.7
Uncleared cookies on cross-host/cross-origin redirect in undici
Authorization headers are cleared on cross-origin redirect. However, cookie headers which are sensitive headers and are official headers found in the spec, remain uncleared. There are active users using cookie headers in undici. This may lead to accidental le…
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Medium 5.3
CRLF injection in request headers
undici is an HTTP/1.1 client, written from scratch for Node.js. It is possible to inject CRLF sequences into request headers in undici in versions less than 5.7.1. A fix was released in version 5.8.0. Sanitizing all HTTP headers from untrusted sources to elim…
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Medium 5.4
SMTP Command Injection in iCalendar Attachments to emails via newlines in Nextcloud Server
Nextcloud server is an open source personal cloud server. Affected versions were found to be vulnerable to SMTP command injection. The impact varies based on which commands are supported by the backend SMTP server. However, the main risk here is that the atta…
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High 8.0
Improper handling of multiline messages in node-irc
node-irc is a socket wrapper for the IRC protocol that extends Node.js' EventEmitter. The vulnerability allows an attacker to manipulate a Matrix user into executing IRC commands by having them reply to a maliciously crafted message. Incorrect handling of a C…
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High 7.6
CRLF Injection leads to Stack Trace Exposure due to lack of filtering at https://demo.microweber.org/ in microweber/microweber
CRLF Injection leads to Stack Trace Exposure due to lack of filtering at https://demo.microweber.org/ in Packagist microweber/microweber prior to 1.2.11.
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Medium 6.3
CRLF Injection in phpservermon/phpservermon
phpservermon is vulnerable to Improper Neutralization of CRLF Sequences
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High 8.8
New line injection during configuration edition
Cachet is an open source status page system. Prior to version 2.5.1, authenticated users, regardless of their privileges (User or Admin), can exploit a new line injection in the configuration edition feature (e.g. mail settings) and gain arbitrary code execut…
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High 7.5
Apache Unomi log injection
Apache Unomi prior to version 1.5.5 allows CRLF log injection because of the lack of escaping in the log statements.
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High 7.5
dio vulnerable to CRLF injection with HTTP method string
The dio package 4.0.0 for Dart allows CRLF injection if the attacker controls the HTTP method string, a different vulnerability than CVE-2020-35669.
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Medium 4.7
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software WebVPN CRLF Injection Vulnerability
A vulnerability in the Clientless SSL VPN (WebVPN) of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to inject arbitrary HTTP headers in the responses of the a…
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Medium 4.2
CRLF vulnerability in Fiber
In Fiber before version 1.12.6, the filename that is given in c.Attachment() (https://docs.gofiber.io/ctx#attachment) is not escaped, and therefore vulnerable for a CRLF injection attack. I.e. an attacker could upload a custom filename and then give the link …
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Medium 6.8
CRLF injection in httplib2
In httplib2 before version 0.18.0, an attacker controlling unescaped part of uri for `httplib2.Http.request()` could change request headers and body, send additional hidden requests to same server. This vulnerability impacts software that uses httplib2 with u…
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Medium 4.7
Cisco Umbrella Carriage Return Line Feed Injection Vulnerability
A vulnerability in the web server of Cisco Umbrella could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user of an affected service. The vulnerability is due to insufficient validation of us…
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Unscored —
Dangling remote share attempts in Nextcloud 16 allow a DNS pollution when running long.
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Medium 5.3
Headers containing newline characters can split messages in hyper
An issue was discovered in the hyper crate before 0.9.18 for Rust. It mishandles newlines in headers.
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Medium 6.1
Twisted CRLF Injection
In Twisted before 19.2.1, twisted.web did not validate or sanitize URIs or HTTP methods, allowing an attacker to inject invalid characters such as CRLF.
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Medium 6.1
Improper Neutralization of CRLF Sequences in urllib3 library for Python
In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.
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Medium 5.4
An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. CRLF injection …
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Medium 6.5
An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. CRLF injection …
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Medium 6.1
Buildbot CRLF Injection
www/resource.py in Buildbot before 1.8.1 allows CRLF injection in the Location header of /auth/login and /auth/logout via the redirect parameter. This affects other web sites in the same domain.
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Low 3.5
obs-service-refresh_patches can be tricked into deleting '..' or other unrelated directories
A Improper Neutralization of CRLF Sequences vulnerability in Open Build Service allows remote attackers to cause deletion of directories by tricking obs-service-refresh_patches to delete them. Affected releases are openSUSE Open Build Service: versions prior …
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Medium —CVE-2018-12537 Public exploit
Moderate severity vulnerability that affects io.vertx:vertx-core
In Eclipse Vert.x version 3.0 to 3.5.1, the HttpServer response headers and HttpClient request headers do not filter carriage return and line feed characters from the header value. This allow unfiltered values to inject a new header in the client request or s…
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High 7.5
Gunicorn contains Improper Neutralization of CRLF sequences in HTTP headers
gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in "process_headers" function in "gunicorn/http/wsgi.py" that can result in an attacker causing the server to return arbitrary HTTP headers. Th…
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Medium 6.1
Mail Gem CRLF Injection vulnerability
The mail gem before 2.5.5 for Ruby (aka A Really Ruby Mail Library) is vulnerable to SMTP command injection via CRLF sequences in a RCPT TO or MAIL FROM command, as demonstrated by CRLF sequences immediately before and after a DATA substring.
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Medium 6.5
bottle.py vulnerable to CRLF Injection
redirect() in bottle.py in bottle 0.12.10 doesn't filter a "\r\n" sequence, which leads to a CRLF attack, as demonstrated by a redirect("233\r\nSet-Cookie: name=salt") call.
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Medium 6.1
Improper Neutralization of CRLF Sequences in Wildfly Undertow
CRLF injection vulnerability in the Undertow web server in WildFly 10.0.0, as used in Red Hat JBoss Enterprise Application Platform (EAP) 7.x before 7.0.2, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks vi…