CWE-93
Improper Neutralization of CRLF Sequences ('CRLF Injection')
Description
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.
Hierarchy (View 1000)
Related attack patterns (CAPEC)
CAPEC-15 · CAPEC-81
CVEs mapped to this weakness (213)
page 10 of 11| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2026-1527 | Med | 0.23 | 4.6 | 0.00 | Mar 12, 2026 | ImpactWhen an application passes user-controlled input to the upgrade option of client.request(), an attacker can inject CRLF sequences (\r\n) to: * Inject arbitrary HTTP headers * Terminate the HTTP request prematurely and smuggle raw data to non-HTTP services (Redis,… | ||
| CVE-2018-12477 | Low | 0.23 | 3.5 | 0.01 | Oct 9, 2018 | 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 to… | ||
| CVE-2026-43882 | Med | 0.21 | 4.3 | 0.00 | May 11, 2026 | WWBN AVideo is an open source video platform. In versions up to and including 29.0, the unauthenticated plugin/Scheduler/downloadICS.php endpoint passes attacker-controlled title, description, and joinURL parameters into Scheduler::downloadICS(), which builds an ICS calendar… | ||
| CVE-2026-33635 | Med | 0.21 | 4.3 | 0.00 | Mar 26, 2026 | iCalendar is a Ruby library for dealing with iCalendar files in the iCalendar format defined by RFC-5545. Starting in version 2.0.0 and prior to version 2.12.2, .ics serialization does not properly sanitize URI property values, enabling ICS injection through attacker-controlled… | ||
| CVE-2026-15157 | Med | 0.20 | 4.2 | 0.00 | Jul 29, 2026 | undici does not validate the type property of a duck-typed blob-like request body before using it as the Content-Type header on the HTTP/1.1 dispatcher. In undici before 6.28.0, from 7.0.0 up to before 7.29.0, and from 8.0.0 up to before 8.9.0, an application that passes a… | ||
| CVE-2026-35601 | Med | 0.20 | 4.1 | 0.00 | Apr 10, 2026 | Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV output generator builds iCalendar VTODO entries via raw string concatenation without applying RFC 5545 TEXT value escaping. User-controlled task titles containing CRLF characters break the… | ||
| CVE-2020-15111 | Med | 0.20 | 4.2 | 0.01 | Jul 20, 2020 | 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 to the victim. With… | ||
| CVE-2026-43968 | Med | 0.19 | 4.0 | 0.00 | May 11, 2026 | Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in ninenines cowlib allows SSE event splitting and injection via unvalidated field values. cow_sse:event/1 in cowlib guards the id and event fields against \n but not against bare \r, and the internal… | ||
| CVE-2022-31151 | Low | 0.17 | 3.7 | 0.01 | Jul 21, 2022 | 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 leakage of cookie to a… | ||
| CVE-2026-43969 | Low | 0.14 | 3.2 | 0.00 | May 11, 2026 | Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in ninenines cowlib allows HTTP request splitting and cookie smuggling via unvalidated cookie name and value fields. cow_cookie:cookie/1 in cowlib builds a client-side Cookie: request header from a list… | ||
| CVE-2026-61477 | Low | 0.08 | 2.3 | 0.00 | Aug 7, 2026 | An injection vulnerability was found in libvirt's virtual network driver. The network XML parser does not strip newline characters from DNS TXT record value attributes and SRV record domain/target attributes. These values are written verbatim into the dnsmasq configuration file… | ||
| CVE-2026-65636 | Low | 0.07 | — | 0.00 | Jul 31, 2026 | Improper Neutralization of CRLF Sequences vulnerability in ufirstgroup ymlr (Elixir.Ymlr module) allows attackers to inject arbitrary content into generated YAML documents through document comments. Ymlr.document!/2 interpolates each caller-supplied comment string into the… | ||
| CVE-2026-49756 | Low | 0.07 | — | 0.00 | Jun 8, 2026 | Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in wojtekmach Req allows multipart parameter smuggling via attacker-influenced part metadata. Req.Utils.encode_form_part/2 in lib/req/utils.ex builds the per-part headers by interpolating the… | ||
| CVE-2026-48596 | Low | 0.07 | — | 0.00 | Jun 2, 2026 | Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') vulnerability in elixir-tesla tesla allows HTTP header injection via Tesla.Multipart.add_content_type_param/2. Tesla.Multipart.add_content_type_param/2 appends caller-supplied strings… | ||
| CVE-2026-48861 | Low | 0.07 | — | 0.00 | Jun 2, 2026 | Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in elixir-mint Mint allows HTTP Request Splitting and HTTP Request Smuggling. In lib/mint/http1/request.ex, the encode_request_line/2 function splices the caller-supplied method and target arguments… | ||
| CVE-2019-10678 | Hig | 0.04 | 7.5 | 0.17 | Mar 31, 2019 | Domoticz before 4.10579 neglects to categorize \n and \r as insecure argument options. | ||
| CVE-2015-5285 | 0.03 | — | 0.06 | Oct 29, 2015 | CRLF injection vulnerability in Kallithea before 0.3 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via the came_from parameter to _admin/login. | |||
| CVE-2026-44092 | Cri | 0.00 | 9.1 | 0.00 | Jul 30, 2026 | An unauthenticated remote attacker can inject malicious input into the ModbusServer application because it does not validate the input it fetches from MQTT. This may lead to integrity and availability loss. | ||
| CVE-2026-12357 | Hig | 0.00 | 7.2 | 0.01 | Jul 29, 2026 | Heimdall Data Database Proxy generateFileContent CRLF Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Heimdall Data Database Proxy. Authentication is required to exploit this… | ||
| CVE-2026-57511 | Med | 0.00 | 5.4 | 0.00 | Jul 28, 2026 | SuperPlane before 0.30.0 contains an SMTP header injection vulnerability that allows unauthenticated attackers to inject arbitrary SMTP headers by including CRLF sequences in the event payload title field delivered via webhook. Attackers can manipulate the unsanitized title… |
- risk 0.23cvss 4.6epss 0.00
ImpactWhen an application passes user-controlled input to the upgrade option of client.request(), an attacker can inject CRLF sequences (\r\n) to: * Inject arbitrary HTTP headers * Terminate the HTTP request prematurely and smuggle raw data to non-HTTP services (Redis,…
- risk 0.23cvss 3.5epss 0.01
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 to…
- risk 0.21cvss 4.3epss 0.00
WWBN AVideo is an open source video platform. In versions up to and including 29.0, the unauthenticated plugin/Scheduler/downloadICS.php endpoint passes attacker-controlled title, description, and joinURL parameters into Scheduler::downloadICS(), which builds an ICS calendar…
- risk 0.21cvss 4.3epss 0.00
iCalendar is a Ruby library for dealing with iCalendar files in the iCalendar format defined by RFC-5545. Starting in version 2.0.0 and prior to version 2.12.2, .ics serialization does not properly sanitize URI property values, enabling ICS injection through attacker-controlled…
- risk 0.20cvss 4.2epss 0.00
undici does not validate the type property of a duck-typed blob-like request body before using it as the Content-Type header on the HTTP/1.1 dispatcher. In undici before 6.28.0, from 7.0.0 up to before 7.29.0, and from 8.0.0 up to before 8.9.0, an application that passes a…
- risk 0.20cvss 4.1epss 0.00
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV output generator builds iCalendar VTODO entries via raw string concatenation without applying RFC 5545 TEXT value escaping. User-controlled task titles containing CRLF characters break the…
- risk 0.20cvss 4.2epss 0.01
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 to the victim. With…
- risk 0.19cvss 4.0epss 0.00
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in ninenines cowlib allows SSE event splitting and injection via unvalidated field values. cow_sse:event/1 in cowlib guards the id and event fields against \n but not against bare \r, and the internal…
- risk 0.17cvss 3.7epss 0.01
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 leakage of cookie to a…
- risk 0.14cvss 3.2epss 0.00
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in ninenines cowlib allows HTTP request splitting and cookie smuggling via unvalidated cookie name and value fields. cow_cookie:cookie/1 in cowlib builds a client-side Cookie: request header from a list…
- risk 0.08cvss 2.3epss 0.00
An injection vulnerability was found in libvirt's virtual network driver. The network XML parser does not strip newline characters from DNS TXT record value attributes and SRV record domain/target attributes. These values are written verbatim into the dnsmasq configuration file…
- risk 0.07cvss —epss 0.00
Improper Neutralization of CRLF Sequences vulnerability in ufirstgroup ymlr (Elixir.Ymlr module) allows attackers to inject arbitrary content into generated YAML documents through document comments. Ymlr.document!/2 interpolates each caller-supplied comment string into the…
- risk 0.07cvss —epss 0.00
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in wojtekmach Req allows multipart parameter smuggling via attacker-influenced part metadata. Req.Utils.encode_form_part/2 in lib/req/utils.ex builds the per-part headers by interpolating the…
- risk 0.07cvss —epss 0.00
Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') vulnerability in elixir-tesla tesla allows HTTP header injection via Tesla.Multipart.add_content_type_param/2. Tesla.Multipart.add_content_type_param/2 appends caller-supplied strings…
- risk 0.07cvss —epss 0.00
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in elixir-mint Mint allows HTTP Request Splitting and HTTP Request Smuggling. In lib/mint/http1/request.ex, the encode_request_line/2 function splices the caller-supplied method and target arguments…
- risk 0.04cvss 7.5epss 0.17
Domoticz before 4.10579 neglects to categorize \n and \r as insecure argument options.
- CVE-2015-5285Oct 29, 2015risk 0.03cvss —epss 0.06
CRLF injection vulnerability in Kallithea before 0.3 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via the came_from parameter to _admin/login.
- risk 0.00cvss 9.1epss 0.00
An unauthenticated remote attacker can inject malicious input into the ModbusServer application because it does not validate the input it fetches from MQTT. This may lead to integrity and availability loss.
- risk 0.00cvss 7.2epss 0.01
Heimdall Data Database Proxy generateFileContent CRLF Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Heimdall Data Database Proxy. Authentication is required to exploit this…
- risk 0.00cvss 5.4epss 0.00
SuperPlane before 0.30.0 contains an SMTP header injection vulnerability that allows unauthenticated attackers to inject arbitrary SMTP headers by including CRLF sequences in the event payload title field delivered via webhook. Attackers can manipulate the unsanitized title…