Common Weakness Enumeration

CWE-93

Improper Neutralization of CRLF Sequences ('CRLF Injection')

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.

CVE-2026-46719 (GCVE-0-2026-46719)

Vulnerability from cvelistv5 – Published: 2026-05-16 13:37 – Updated: 2026-06-19 15:28
VLAI
Title
Net::Statsd::Lite versions before 0.9.0 for Perl allowed metric injections
Summary
Net::Statsd::Lite versions before 0.9.0 for Perl allowed metric injections. The metric names were not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences
  • CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Assigner
References
Impacted products
Vendor Product Version
RRWO Net::Statsd::Lite Affected: 0 , < 0.9.0 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-46720 (GCVE-0-2026-46720)

Vulnerability from cvelistv5 – Published: 2026-05-17 17:51 – Updated: 2026-06-19 15:29
VLAI
Title
Net::Statsd::Tiny versions before 0.3.8 for Perl allowed metric injections
Summary
Net::Statsd::Tiny versions before 0.3.8 for Perl allowed metric injections. The metric names and set values were not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences
  • CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Assigner
References
Impacted products
Vendor Product Version
RRWO Net::Statsd::Tiny Affected: 0 , < 0.3.8 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-46739 (GCVE-0-2026-46739)

Vulnerability from cvelistv5 – Published: 2026-06-04 15:45 – Updated: 2026-06-19 15:30
VLAI
Title
Net::Statsd versions before 0.13 for Perl allow metric injections
Summary
Net::Statsd versions before 0.13 for Perl allow metric injections. The metric names are not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics. The update_stats (used for updating counters) and gauge methods do not check that values are numeric (which would block metric injection).
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences
  • CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Assigner
References
Impacted products
Vendor Product Version
COSIMO Net::Statsd Affected: 0 , < 0.13 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-46740 (GCVE-0-2026-46740)

Vulnerability from cvelistv5 – Published: 2026-05-26 22:48 – Updated: 2026-06-19 15:31
VLAI
Title
Mojolicious::Plugin::Statsd versions through 0.04 for Perl allowed metric injections
Summary
Mojolicious::Plugin::Statsd versions through 0.04 for Perl allowed metric injections. The metric names and set values were not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics. Version 0.06 changes the module from being a statsd client to using a separate statsd client. It defaults to using a version of Net::Statsd::Tiny that fixes a similar issue (CVE-2026-46720).
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences
  • CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Assigner
References
Impacted products
Vendor Product Version
RRWO Mojolicious::Plugin::Statsd Affected: 0 , ≤ 0.04 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-46741 (GCVE-0-2026-46741)

Vulnerability from cvelistv5 – Published: 2026-06-04 15:54 – Updated: 2026-06-19 15:31
VLAI
Title
Etsy::StatsD versions through 1.002002 for Perl allow metric injections
Summary
Etsy::StatsD versions through 1.002002 for Perl allow metric injections. The metric names and values are not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics. Note that the git repository contains an unreleased version with the gauge and set methods that also do not check for potential metric injections.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences
  • CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Assigner
References
Impacted products
Vendor Product Version
SANBEG Etsy::StatsD Affected: 0 , ≤ 1.002002 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-47069 (GCVE-0-2026-47069)

Vulnerability from cvelistv5 – Published: 2026-05-25 14:00 – Updated: 2026-05-27 15:40
VLAI
Title
CRLF injection in cookie domain/path options in hackney
Summary
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in benoitc hackney allows HTTP Response Splitting. The hackney_cookie:setcookie/3 function in src/hackney_cookie.erl validates the Name and Value arguments against CRLF and control characters, but concatenates the domain and path options verbatim into the output iolist with no equivalent check. An attacker who controls either option — for example by supplying a Host header value forwarded as the cookie domain, or a request path forwarded as the cookie path — can inject a literal CRLF sequence and arbitrary additional Set-Cookie headers into the HTTP response. This issue affects hackney: from 0.9.0 before 4.0.1.
Severity
2.1 (Low)
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
EEF
References
Impacted products
Vendor Product Version
benoitc hackney Affected: 0.9.0 , < 4.0.1 (semver)
    cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
 Create a notification for this product.
benoitc hackney Affected: 602d5c7f2ea4acbc83ed75230655d935a0750ebc , < 8e02b99c28aea1b3fa2ddc0e66f51fe5bb0ac540 (git)
    cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Peter Ullrich Benoit Chesneau Jonatan Männchen / EEF
Show details on NVD website
To clipboard 

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CVE-2026-47072 (GCVE-0-2026-47072)

Vulnerability from cvelistv5 – Published: 2026-05-25 14:00 – Updated: 2026-05-27 15:41
VLAI
Title
CRLF injection in WebSocket upgrade request in hackney
Summary
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in benoitc hackney allows HTTP Request/Response Splitting. The WebSocket upgrade code in src/hackney_ws.erl copies the host, path, headers (ExtraHeaders), and protocols options from the caller-supplied opts map into the internal #ws_data{} record in init/1 and then splices them verbatim into the raw HTTP/1.1 upgrade request by binary concatenation in do_handshake/1. No CRLF or NUL stripping is performed at any of these four injection sites. An attacker who controls any of these options — for example by forwarding URL components or header values from untrusted input into hackney_ws:start_link/1 — can inject arbitrary HTTP headers into the outbound WebSocket upgrade request, leading to header injection, credential spoofing toward the upstream server, log and cache poisoning, or request smuggling via intermediary proxies. This issue affects hackney: from 2.0.0 before 4.0.1.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:H/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
EEF
References
Impacted products
Vendor Product Version
benoitc hackney Affected: 2.0.0 , < 4.0.1 (semver)
    cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
 Create a notification for this product.
benoitc hackney Affected: 690cecaf236fba49526da404a5bc889a24367a3e , < 52310ca807e7b48441ba0e9129171f535313fdd1 (git)
    cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Peter Ullrich Benoit Chesneau Jonatan Männchen / EEF
Show details on NVD website
To clipboard 

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CVE-2026-47075 (GCVE-0-2026-47075)

Vulnerability from cvelistv5 – Published: 2026-05-25 14:00 – Updated: 2026-05-27 15:41
VLAI
Title
CR/LF injection in query parameter in hackney
Summary
Improper Neutralization of CRLF Sequences vulnerability in benoitc hackney allows HTTP Request Splitting. hackney does not percent-encode carriage return (\r) or line feed (\n) characters in the URL query component before constructing the HTTP/1.1 request target. Characters outside the grammar defined in RFC 3986 Section 3.4 must be percent-encoded, but hackney_url:make_url/3 passes the query binary directly without validation or escaping. An attacker who can control all or part of a URL passed to hackney can inject raw CRLF sequences into the query string, which are then sent as HTTP line breaks in the request target. This enables injection of arbitrary HTTP headers or splitting of the HTTP request. This issue affects hackney: from 0 before 4.0.1.
Severity
6.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
EEF
References
Impacted products
Vendor Product Version
benoitc hackney Affected: 0 , < 4.0.1 (semver)
    cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
 Create a notification for this product.
benoitc hackney Affected: 8bb1a359a81ae58567c84f8d24564e9742e6f2bd , < ca73dd0aba0ed557449c18288bf07241671a43c9 (git)
    cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
tepel-chen Benoit Chesneau Jonatan Männchen / EEF
Show details on NVD website
To clipboard 

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CVE-2026-47240 (GCVE-0-2026-47240)

Vulnerability from cvelistv5 – Published: 2026-06-22 20:17 – Updated: 2026-06-23 15:06
VLAI
Title
Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument
Summary
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a "raw data" argument that is sent verbatim after validation to prevent command injection. However, if a server does not support non-synchronizing literals, it may still be possible to inject arbitrary IMAP commands inside non-synchronizing literals. A server without support for non-synchronizing literals may interpret the "+}\r\n" as the end of a malformed command line and respond with a tagged BAD. In that case, the contents of the literal will be interpreted as one or more new pipelined commands, allowing a CRLF command injection attack to succeed. This affects criteria for #search and #uid_search; search_keys for #sort, #thread, #uid_sort, and #uid_thread; and attr for #fetch and #uid_fetch. This vulnerability is fixed in 0.6.5 and 0.5.15.
Severity
5.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
Impacted products
Vendor Product Version
ruby net-imap Affected: >= 0.6.0, < 0.6.4.1
Affected: < 0.5.15
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-47242 (GCVE-0-2026-47242)

Vulnerability from cvelistv5 – Published: 2026-06-22 20:19 – Updated: 2026-06-23 12:06
VLAI
Title
Net::IMAP: Command Injection via ID command argument
Summary
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, when Net::IMAP#id is called with a hash argument, although the ID field value strings are correctly quoted (escaping quoted specials), they were not validated to prohibit CRLF sequences. While Net::IMAP#enable does process its arguments for aliases, it does not validate them as valid atoms (or as a list of valid atoms). The #to_s value is sent verbatim. Arguments to either command could be used by an attacker to inject arbitrary IMAP commands. This vulnerability is fixed in 0.6.5 and 0.5.15.
Severity
5.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
Impacted products
Vendor Product Version
ruby net-imap Affected: >= 0.6.0, < 0.6.4.1
Affected: < 0.5.15
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                "id": "CVE-2026-47242",
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          "value": "Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, when Net::IMAP#id is called with a hash argument, although the ID field value strings are correctly quoted (escaping quoted specials), they were not validated to prohibit CRLF sequences. While Net::IMAP#enable does process its arguments for aliases, it does not validate them as valid atoms (or as a list of valid atoms). The #to_s value is sent verbatim. Arguments to either command could be used by an attacker to inject arbitrary IMAP commands. This vulnerability is fixed in 0.6.5 and 0.5.15."
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            "privilegesRequired": "NONE",
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Mitigation

Phase: Implementation

Description:

  • Avoid using CRLF as a special sequence.
Mitigation

Phase: Implementation

Description:

  • Appropriately filter or quote CRLF sequences in user-controlled input.
CAPEC-15: Command Delimiters

An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.

CAPEC-81: Web Server Logs Tampering

Web Logs Tampering attacks involve an attacker injecting, deleting or otherwise tampering with the contents of web logs typically for the purposes of masking other malicious behavior. Additionally, writing malicious data to log files may target jobs, filters, reports, and other agents that process the logs in an asynchronous attack pattern. This pattern of attack is similar to "Log Injection-Tampering-Forging" except that in this case, the attack is targeting the logs of the web server and not the application.

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