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
279 results · Feed
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Medium 5.0
In JetBrains Hub before 2026.2.52556 sMTP command injection via email verification was possible
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High 7.5
mpv 0.29.0 before 0.42.0 Playlist Entry Injection via ytdl_hook Newlines
mpv 0.29.0 before 0.42.0 contains a playlist injection vulnerability in the bundled ytdl_hook script that allows remote attackers to add unchecked entries by embedding newlines in playlist URLs. Attackers controlling a feed or page can bypass url_is_safe() to…
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High 7.2
zbateson mail-mime-parser before 3.0.9 and 4.x before 4.0.6 CRLF Header Injection via Message Builders
zbateson mail-mime-parser before 3.0.9 and 4.x before 4.0.6 contains a CRLF header injection vulnerability in message-building helpers that fail to strip CR and LF characters. Attackers supplying crafted MIME type, charset, encoding, micalg, or protocol value…
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High 8.1
OPNsense: Configuration line injection via multiple GUI text fields
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.11 and 26.4.1p1, authenticated Web UI or API users with delegated access to affected settings can submit CR or LF characters in fields expected to contain one line, causing generated pri…
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Low 3.5
AzuraCast before 0.24.0 CRLF Injection via Mount display_name in PLS Playlist
AzuraCast before 0.24.0 contains a CRLF injection vulnerability that allows low-privilege station users to inject playlist entries by embedding CR/LF sequences in mount or remote relay display_name values. Attackers with Station:MountPoints or Station:RemoteR…
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Medium 5.6
HTTP::Session versions before 0.54 for Perl allow memcached command injection via unfiltered session ids in HTTP::Session::Store::CHI
HTTP::Session versions before 0.54 for Perl allow memcached command injection via unfiltered session ids in HTTP::Session::Store::CHI. The session id from the client's cookie reaches the CHI cache unchanged. The sibling HTTP::Session::Store::Memcached rejects…
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Medium 5.9
OPNsense core through 26.7.8 NTP Configuration Injection via GPS and PPS Fudge Fields
OPNsense core through 26.7.8 contains a configuration injection vulnerability that allows authenticated users to append ntpd.conf directives by embedding newlines in the fudge and refid fields. Attackers holding the page-services-ntp-gps or PPS privilege can …
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Medium 6.8
OPNsense before 26.7.8 Wireless WPA Configuration Line Injection via Identity
OPNsense core before 26.7.8 contains a configuration line injection vulnerability that allows authenticated users with wireless-edit privilege to inject directives by embedding CR/LF characters in WPA fields. Attackers can place newlines in wpa.identity, wpa.…
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Low 3.7
CakePHP through 5.4.3 Email Header Injection via Bare CR/LF in SmtpTransport and MailTransport
CakePHP 4.5.12, 4.6.5, 5.1.8 through 5.1.10, 5.2.14 through 5.2.15, 5.3.7, and 5.4.0 through 5.4.3 contain an email header injection vulnerability because SmtpTransport and MailTransport strip only CRLF pairs from header values, an incomplete fix for CVE-2026…
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Low 3.7
CakePHP through 5.4.3 MIME Header Injection via FormDataPart Content-Type
CakePHP through 5.4.3 contains a header injection vulnerability in FormDataPart that allows attackers to inject MIME part headers via unsanitized Content-Type and Content-ID values. Attackers can supply CR/LF sequences in attachment MIME types or Content-IDs …
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Low 3.7
Contact Form by Supsystic < 1.11.1 - Unauthenticated CRLF / Email Header Injection via Reply-To Field Mapping
The Contact Form by Supsystic WordPress plugin before 1.11.1 does not strip CR/LF characters or re-validate submitted field values before concatenating them into outgoing email headers when a form is configured to map a submitted field into its Reply-To, From…
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Low 3.7
LibreSSL ocspcheck through 4.4.0 CRLF Injection via AIA OCSP URL Path
LibreSSL ocspcheck through 4.4.0 contains a CRLF injection vulnerability that allows attackers to inject HTTP headers by embedding CR/LF sequences in a certificate's AIA OCSP URI path. Because url2host() copies the path without rejecting control characters an…
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Low 3.7
LibreSSL through 4.4.0 CRLF Injection via OCSP_sendreq_new() Request Line
LibreSSL through 4.4.0 contains a CRLF injection vulnerability in the libcrypto OCSP_sendreq_new() and OCSP_parse_url() functions, which write unvalidated request paths into the OCSP POST request line. Attackers can embed carriage return and line feed charact…
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High 8.4
Oray Pugongying X5 Pro Dnsmasq crlf injection
A vulnerability was found in Oray Pugongying X5 Pro 7.6.1. This affects an unknown part of the component Dnsmasq. Performing a manipulation results in crlf injection. Remote exploitation of the attack is possible. The exploit has been made public and could be…
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Critical 9.1
Oray Pugongying X5 Pro L2TP Authentication crlf injection
A flaw has been found in Oray Pugongying X5 Pro 7.6.1. Affected by this vulnerability is an unknown functionality of the component L2TP Authentication. This manipulation of the argument Username causes crlf injection. The attack may be initiated remotely. The…
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Critical 9.1
Oray Pugongying X5 Pro IPsec Policy ipsec.conf crlf injection
A vulnerability was detected in Oray Pugongying X5 Pro 7.6.1. Affected is an unknown function of the file /etc/ipsec.conf of the component IPsec Policy Handler. The manipulation of the argument secproto results in crlf injection. The attack can be launched re…
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Critical 9.1
Oray Pugongying X5 Pro Dnsmasq crlf injection
A security vulnerability has been detected in Oray Pugongying X5 Pro 7.6.1. This impacts an unknown function of the component Dnsmasq. The manipulation of the argument rent_time leads to crlf injection. The attack can be initiated remotely. The exploit has be…
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Critical 9.9
Oray Pugongying X5 Pro SNMP snmp_set crlf injection
A weakness has been identified in Oray Pugongying X5 Pro 7.6.1. This affects the function snmp_set of the component SNMP Handler. Executing a manipulation of the argument info.community can lead to crlf injection. It is possible to launch the attack remotely.…
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Critical 9.9
Oray Pugongying X5 Pro Ser2net crlf injection
A security flaw has been discovered in Oray Pugongying X5 Pro 7.6.1. The impacted element is an unknown function of the component Ser2net. Performing a manipulation of the argument regmsg results in crlf injection. It is possible to initiate the attack remote…
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Medium 4.3
Zimbra Collaboration Suite Data Source Test SMTP Command Injection via Unsanitized Email Address
An SMTP command injection vulnerability in the data-source testing functionality of Zimbra Collaboration Suite (ZCS) allows an ordinary authenticated user with account options enabled to inject CR/LF into the emailAddress inserted into an SMTP envelope comman…
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High 7.1
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote…
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Low 2.0
virtualenv: Venv configuration readback can reinterpret path boundaries
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the stdlib venv creator reads generated pyvenv.cfg with str.splitlines() and merges parsed keys over virtualenv's selected configuration. An untrusted caller who influen…
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Medium 6.5
ArmorX Global Technology｜ArmorX Spam - Command Injection
ArmorX Spam developed by ArmorX Global Technology has a Command Injection vulnerability. Authenticated remote attackers can inject crafted commands into a specific parameter, thereby uploading malicious code to the server.
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High 7.1CVE-2026-113386 Public exploit
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 are affected by IMAP command injection. A remote authenticated a…
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Low 3.8
Subscribe to Comments 2.3 - 2.3.2 - Author+ Email Header Injection via From Name Setting
The Subscribe to Comments WordPress plugin before 2.3.3 does not sanitise newline characters from a notification sender-name setting before using it in e-mail headers, allowing users with Author-level access and above to inject arbitrary e-mail headers, such …
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Medium 5.5
Netgate pfSense CE 2.7.1 through 2.9.0 CRLF Injection via services_unbound_advanced.php
Netgate pfSense CE from 2.7.1 through 2.9.0 contains a CRLF injection vulnerability in services_unbound_advanced.php that allows authenticated users with DNS Resolver: Advanced privilege to inject Unbound directives. Attackers can embed CR/LF characters in th…
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Medium 5.5
Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php
Netgate pfSense CE through 2.9.0 contains a CRLF injection vulnerability in services_unbound_acls.php that allows authenticated users with the DNS Resolver: Access Lists privilege to inject Unbound configuration directives. Attackers can embed CR/LF character…
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Medium 6.6
Netgate pfSense CE through 2.9.0 php.ini Injection via Timezone Setting
Netgate pfSense CE through 2.9.0 contains a php.ini injection vulnerability that allows authenticated users with General Setup privileges to inject directives by submitting an unvalidated timezone value. Attackers can embed a quote and newline to add auto_pre…
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High 7.2
Netgate pfSense CE through 2.9.0 Crontab Injection via PPP Periodic Reset ptpid
pfSense CE through 2.9.0 contains a crontab injection vulnerability in interfaces_ppps_edit.php that allows authenticated users to execute commands as root by injecting newlines into the ptpid or reset hour/minute fields. Attackers holding the 'WebCfg - Inter…
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Medium 6.6
Netgate pfSense CE through 2.9.0 Command Injection via PPPoE Server Username
Netgate pfSense CE through 2.9.0 contains a newline injection vulnerability in services_pppoe_edit.php that allows privileged users to inject mpd.secret entries via unvalidated username POST fields. Attackers with the PPPoE Server Edit privilege can add a lin…
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Low 2.5
CUPS fax option values bypass the CVE-2026-34980 control-character sanitizer (incomplete fix)
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, the cupsdCreateJob option-string builder in scheduler/job.c maps attacker-controlled destination-uri and pre-dial-string values from a config…
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Medium 4.0
FreeRDP 3.0.0 before 3.32.0 HTTP Header Injection via Proxy Routing Token
FreeRDP 3.0.0 before 3.32.0 allows HTTP header injection in its proxy because a lone LF in the target portion of a routing token (Cookie: msts=) is not rejected and is written by http_proxy_connect into the CONNECT request line and Host header. A remote unaut…
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Medium 6.9
CRLF header injection in vertx-mail-client allows manipulation of outgoing SMTP messages
In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the vertx-mail-client does not sanitize CR (\r) or LF (\n) characters in user-supplied email header names and values before writing them into the SMTP DATA sectio…
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Medium 5.8
OWASP Coraza WAF: Native audit-log format allows CRLF injection and log forgery via request body and header fields
OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.0, the Native audit-log formatter in internal/auditlog/formats.go writes attacker-influenced request and response fields without neutralizing carriage r…
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Medium 6.8
Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1 directly accepts Apache configuration file data du…
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Medium 6.9
An input validation and output encoding vulnerability exists in the web management interface of Brocade Fabric OS versi…
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Medium 6.3
Kiteworks Core Command Execution through Configuration Injection
In multi-node deployments, an attacker who had already obtained code execution on one appliance node could submit a value through an internal cluster interface that was written into monitoring configuration on another node without sufficient validation, poten…
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Medium 6.6
Kiteworks Core Server-Side Request Forgery through CRLF Injection
An authenticated administrator could cause the server to issue requests to, and interact with, internal network services that are not meant to be reachable through this interface. On its own this did not result in code execution.
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Medium 5.8
virtualenv writes prompt values into pyvenv.cfg without sanitizing line boundaries, allowing configuration injection
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write() writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg._read_values() parses the file with str.splitlines() and accepts the…
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Critical 9.4
Improper Neutralization of CRLF Sequences ('CRLF Injection') in docker-mailbox
Improper neutralization of CRLF sequences in IMAP command construction in psyb0t/docker-mailbox before 0.4.13 allows a remote unauthenticated attacker, when bearer-token authentication is not configured, to inject additional IMAP commands into an authenticate…