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-2025-8419 (GCVE-0-2025-8419)
Vulnerability from cvelistv5 – Published: 2025-08-06 17:10 – Updated: 2026-01-08 02:59
VLAI
Title
Org.keycloak/keycloak-services: keycloak smtp inject vulnerability
Summary
A vulnerability was found in Keycloak-services. Special characters used during e-mail registration may perform SMTP Injection and unexpectedly send short unwanted e-mails. The email is limited to 64 characters (limited local part of the email), so the attack is limited to very shorts emails (subject and little data, the example is 60 chars). This flaw's only direct consequence is an unsolicited email being sent from the Keycloak server. However, this action could be a precursor for more sophisticated attacks.
Severity
5.3 (Medium)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2025:15336 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:15337 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:15338 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:15339 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2025-8419 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2385776 | issue-trackingx_refsource_REDHAT |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Keycloak | keycloak |
Affected:
0 , < 26.3.3
(semver)
|
|
| Red Hat | Red Hat build of Keycloak 26.0 |
cpe:/a:redhat:build_keycloak:26.0 |
|
| Red Hat | Red Hat build of Keycloak 26.0 |
Unaffected:
26.0.15-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.0::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.0 |
Unaffected:
26.0-18 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.0::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.0 |
Unaffected:
26.0-19 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.0::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.2 |
cpe:/a:redhat:build_keycloak:26.2 |
|
| Red Hat | Red Hat build of Keycloak 26.2 |
Unaffected:
26.2.8-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.2::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.2 |
Unaffected:
26.2-8 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.2::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.2 |
Unaffected:
26.2-8 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.2::el9 |
Date Public
2025-08-06 00:00
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CVE-2025-8715 (GCVE-0-2025-8715)
Vulnerability from cvelistv5 – Published: 2025-08-14 13:00 – Updated: 2026-02-26 17:48
VLAI
Title
PostgreSQL pg_dump newline in object name executes arbitrary code in psql client and in restore target server
Summary
Improper neutralization of newlines in pg_dump in PostgreSQL allows a user of the origin server to inject arbitrary code for restore-time execution as the client operating system account running psql to restore the dump, via psql meta-commands inside a purpose-crafted object name. The same attacks can achieve SQL injection as a superuser of the restore target server. pg_dumpall, pg_restore, and pg_upgrade are also affected. Versions before PostgreSQL 17.6, 16.10, 15.14, 14.19, and 13.22 are affected. Versions before 11.20 are unaffected. CVE-2012-0868 had fixed this class of problem, but version 11.20 reintroduced it.
Severity
8.8 (High)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | PostgreSQL |
Affected:
17 , < 17.6
(rpm)
Affected: 16 , < 16.10 (rpm) Affected: 15 , < 15.14 (rpm) Affected: 14 , < 14.19 (rpm) Affected: 11.20 , < 13.22 (rpm) |
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CVE-2026-0672 (GCVE-0-2026-0672)
Vulnerability from cvelistv5 – Published: 2026-01-20 21:52 – Updated: 2026-03-03 14:43
VLAI
Title
Header injection in http.cookies.Morsel
Summary
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Severity
CWE
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.20
(python)
Affected: 3.11.0 , < 3.11.15 (python) Affected: 3.12.0 , < 3.12.13 (python) Affected: 3.13.0 , < 3.13.12 (python) Affected: 3.14.0 , < 3.14.3 (python) Affected: 3.15.0a1 , < 3.15.0a6 (python) |
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CVE-2026-1299 (GCVE-0-2026-1299)
Vulnerability from cvelistv5 – Published: 2026-01-23 16:27 – Updated: 2026-03-03 14:43
VLAI
Title
email BytesGenerator header injection due to unquoted newlines
Summary
The
email module, specifically the "BytesGenerator" class, didn’t properly quote newlines for email headers when
serializing an email message allowing for header injection when an email
is serialized. This is only applicable if using "LiteralHeader" writing headers that don't respect email folding rules, the new behavior will reject the incorrectly folded headers in "BytesGenerator".
Severity
CWE
Assigner
References
10 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.20
(python)
Affected: 3.11.0 , < 3.11.15 (python) Affected: 3.12.0 , < 3.12.13 (python) Affected: 3.13.0 , < 3.13.12 (python) Affected: 3.14.0 , < 3.14.3 (python) Affected: 3.15.0a1 , < 3.15.0a6 (python) |
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CVE-2026-1467 (GCVE-0-2026-1467)
Vulnerability from cvelistv5 – Published: 2026-01-27 09:17 – Updated: 2026-03-25 14:34
VLAI
Title
Libsoup: libsoup: http header injection via specially crafted urls when an http proxy is configured
Summary
A flaw was found in libsoup, an HTTP client library. This vulnerability, known as CRLF (Carriage Return Line Feed) Injection, occurs when an HTTP proxy is configured and the library improperly handles URL-decoded input used to create the Host header. A remote attacker can exploit this by providing a specially crafted URL containing CRLF sequences, allowing them to inject additional HTTP headers or complete HTTP request bodies. This can lead to unintended or unauthorized HTTP requests being forwarded by the proxy, potentially impacting downstream services.
Severity
5.8 (Medium)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-1467 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2433174 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/libsoup/-/issues/488 |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2026-01-27 00:00
Credits
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CVE-2026-1527 (GCVE-0-2026-1527)
Vulnerability from cvelistv5 – Published: 2026-03-12 20:17 – Updated: 2026-03-13 18:06
VLAI
Title
undici is vulnerable to CRLF Injection via upgrade option
Summary
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, Memcached, Elasticsearch)
The vulnerability exists because undici writes the upgrade value directly to the socket without validating for invalid header characters:
// lib/dispatcher/client-h1.js:1121
if (upgrade) {
header += `connection: upgrade\r\nupgrade: ${upgrade}\r\n`
}
Severity
4.6 (Medium)
CWE
- CWE-93 - Improper neutralization of CRLF sequences ('CRLF injection')
Assigner
References
Impacted products
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CVE-2026-1536 (GCVE-0-2026-1536)
Vulnerability from cvelistv5 – Published: 2026-01-28 15:15 – Updated: 2026-03-25 14:21
VLAI
Title
Libsoup: libsoup: http header injection or response splitting via crlf injection in content-disposition header
Summary
A flaw was found in libsoup. An attacker who can control the input for the Content-Disposition header can inject CRLF (Carriage Return Line Feed) sequences into the header value. These sequences are then interpreted verbatim when the HTTP request or response is constructed, allowing arbitrary HTTP headers to be injected. This vulnerability can lead to HTTP header injection or HTTP response splitting without requiring authentication or user interaction.
Severity
5.8 (Medium)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-1536 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2433834 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/libsoup/-/issues/486 |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2026-01-28 00:00
Credits
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CVE-2026-1714 (GCVE-0-2026-1714)
Vulnerability from cvelistv5 – Published: 2026-02-18 04:35 – Updated: 2026-04-08 17:24
VLAI
Title
ShopLentor <= 3.3.2 - Unauthenticated Email Relay Abuse via 'woolentor_suggest_price_action' AJAX Action
Summary
The ShopLentor – WooCommerce Builder for Elementor & Gutenberg +21 Modules – All in One Solution plugin for WordPress is vulnerable to Email Relay Abuse in all versions up to, and including, 3.3.2. This is due to the lack of validation on the 'send_to', 'product_title', 'wlmessage', and 'wlemail' parameters in the 'woolentor_suggest_price_action' AJAX endpoint. This makes it possible for unauthenticated attackers to send arbitrary emails to any recipient with full control over the subject line, message content, and sender address (via CRLF injection in the 'wlemail' parameter), effectively turning the website into a full email relay for spam or phishing campaigns.
Severity
8.6 (High)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
8 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| devitemsllc | ShopLentor – All-in-One WooCommerce Growth & Store Enhancement Plugin |
Affected:
0 , ≤ 3.3.2
(semver)
|
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CVE-2026-20113 (GCVE-0-2026-20113)
Vulnerability from cvelistv5 – Published: 2026-03-25 16:08 – Updated: 2026-03-27 15:02
VLAI
Summary
A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user.
This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to arbitrarily inject log entries, manipulate the structure of log files, or obscure legitimate log events.
Severity
5.3 (Medium)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco IOS XE Software |
Affected:
16.6.1
Affected: 16.6.2 Affected: 16.6.3 Affected: 16.6.4 Affected: 16.6.5 Affected: 16.6.4a Affected: 16.6.5a Affected: 16.6.6 Affected: 16.6.7 Affected: 16.6.8 Affected: 16.6.9 Affected: 16.6.10 Affected: 16.7.1 Affected: 16.7.1a Affected: 16.7.1b Affected: 16.7.2 Affected: 16.7.3 Affected: 16.7.4 Affected: 16.8.1 Affected: 16.8.1a Affected: 16.8.1b Affected: 16.8.1s Affected: 16.8.1c Affected: 16.8.1d Affected: 16.8.2 Affected: 16.8.1e Affected: 16.8.3 Affected: 16.9.1 Affected: 16.9.2 Affected: 16.9.1a Affected: 16.9.1b Affected: 16.9.1s Affected: 16.9.3 Affected: 16.9.4 Affected: 16.9.5 Affected: 16.9.5f Affected: 16.9.6 Affected: 16.9.7 Affected: 16.9.8 Affected: 16.10.1 Affected: 16.10.1a Affected: 16.10.1b Affected: 16.10.1s Affected: 16.10.1c Affected: 16.10.1e Affected: 16.10.1d Affected: 16.10.2 Affected: 16.10.1f Affected: 16.10.1g Affected: 16.10.3 Affected: 16.11.1 Affected: 16.11.1a Affected: 16.11.1b Affected: 16.11.2 Affected: 16.11.1s Affected: 16.12.1 Affected: 16.12.1s Affected: 16.12.1a Affected: 16.12.1c Affected: 16.12.1w Affected: 16.12.2 Affected: 16.12.1y Affected: 16.12.2a Affected: 16.12.3 Affected: 16.12.8 Affected: 16.12.2s Affected: 16.12.1x Affected: 16.12.1t Affected: 16.12.4 Affected: 16.12.3s Affected: 16.12.3a Affected: 16.12.4a Affected: 16.12.5 Affected: 16.12.6 Affected: 16.12.1z1 Affected: 16.12.5a Affected: 16.12.5b Affected: 16.12.1z2 Affected: 16.12.6a Affected: 16.12.7 Affected: 16.12.10a Affected: 16.12.11 Affected: 17.1.1 Affected: 17.1.1a Affected: 17.1.1s Affected: 17.1.1t Affected: 17.1.3 Affected: 17.2.1 Affected: 17.2.1r Affected: 17.2.1a Affected: 17.2.1v Affected: 17.2.2 Affected: 17.2.3 Affected: 17.3.1 Affected: 17.3.2 Affected: 17.3.3 Affected: 17.3.1a Affected: 17.3.1w Affected: 17.3.2a Affected: 17.3.1x Affected: 17.3.1z Affected: 17.3.4 Affected: 17.3.5 Affected: 17.3.4a Affected: 17.3.6 Affected: 17.3.4b Affected: 17.3.4c Affected: 17.3.5a Affected: 17.3.5b Affected: 17.3.7 Affected: 17.3.8 Affected: 17.3.8a Affected: 17.4.1 Affected: 17.4.2 Affected: 17.4.1a Affected: 17.4.1b Affected: 17.4.2a Affected: 17.5.1 Affected: 17.5.1a Affected: 17.6.1 Affected: 17.6.2 Affected: 17.6.1w Affected: 17.6.1a Affected: 17.6.1x Affected: 17.6.3 Affected: 17.6.1y Affected: 17.6.1z Affected: 17.6.3a Affected: 17.6.4 Affected: 17.6.1z1 Affected: 17.6.5 Affected: 17.6.6 Affected: 17.6.6a Affected: 17.6.5a Affected: 17.6.7 Affected: 17.6.8 Affected: 17.6.8a Affected: 17.7.1 Affected: 17.7.1a Affected: 17.7.1b Affected: 17.7.2 Affected: 17.10.1 Affected: 17.10.1a Affected: 17.10.1b Affected: 17.8.1 Affected: 17.8.1a Affected: 17.9.1 Affected: 17.9.1w Affected: 17.9.2 Affected: 17.9.1a Affected: 17.9.1x Affected: 17.9.1y Affected: 17.9.3 Affected: 17.9.2a Affected: 17.9.1x1 Affected: 17.9.3a Affected: 17.9.4 Affected: 17.9.1y1 Affected: 17.9.5 Affected: 17.9.4a Affected: 17.9.5a Affected: 17.9.5b Affected: 17.9.6 Affected: 17.9.6a Affected: 17.9.7 Affected: 17.9.5e Affected: 17.9.5f Affected: 17.9.8 Affected: 17.9.7a Affected: 17.9.7b Affected: 17.11.1 Affected: 17.11.1a Affected: 17.12.1 Affected: 17.12.1w Affected: 17.12.1a Affected: 17.12.1x Affected: 17.12.2 Affected: 17.12.3 Affected: 17.12.2a Affected: 17.12.1y Affected: 17.12.1z Affected: 17.12.4 Affected: 17.12.3a Affected: 17.12.1z1 Affected: 17.12.1z2 Affected: 17.12.4a Affected: 17.12.5 Affected: 17.12.4b Affected: 17.12.1z3 Affected: 17.12.5a Affected: 17.12.1z4 Affected: 17.12.6 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.12.6a Affected: 17.12.5d Affected: 17.12.1z5 Affected: 17.12.1z6 Affected: 17.12.6b Affected: 17.13.1 Affected: 17.13.1a Affected: 17.14.1 Affected: 17.14.1a Affected: 17.15.1 Affected: 17.15.1w Affected: 17.15.1a Affected: 17.15.2 Affected: 17.15.1b Affected: 17.15.1x Affected: 17.15.1z Affected: 17.15.3 Affected: 17.15.2c Affected: 17.15.2a Affected: 17.15.1y Affected: 17.15.2b Affected: 17.15.3a Affected: 17.15.4 Affected: 17.15.3b Affected: 17.15.4d Affected: 17.15.4e Affected: 17.16.1 Affected: 17.16.1a Affected: 17.17.1 Affected: 17.18.1 Affected: 17.18.1w Affected: 17.18.1a Affected: 17.18.1x |
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CVE-2026-21428 (GCVE-0-2026-21428)
Vulnerability from cvelistv5 – Published: 2026-01-01 17:54 – Updated: 2026-01-02 18:50
VLAI
Title
cpp-httplib has CRLF injection in http headers
Summary
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.0, the ``write_headers`` function does not check for CR & LF characters in user supplied headers, allowing untrusted header value to escape header lines.
This vulnerability allows attackers to add extra headers, modify request body unexpectedly & trigger an SSRF attack. When combined with a server that supports http1.1 pipelining (springboot, python twisted etc), this can be used for server side request forgery (SSRF). Version 0.30.0 fixes this issue.
Severity
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/yhirose/cpp-httplib/security/a… | x_refsource_CONFIRM |
| https://github.com/yhirose/cpp-httplib/commit/980… | x_refsource_MISC |
| https://github.com/yhirose/cpp-httplib/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| yhirose | cpp-httplib |
Affected:
< 0.30.0
|
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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.