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-2026-34975 (GCVE-0-2026-34975)
Vulnerability from cvelistv5 – Published: 2026-04-06 16:10 – Updated: 2026-04-07 14:20
VLAI
Title
Plunk has a CRLF Email Header Injection in raw MIME message construction allows authenticated API user to inject arbitrary email headers
Summary
Plunk is an open-source email platform built on top of AWS SES. Prior to 0.8.0, a CRLF header injection vulnerability was discovered in SESService.ts, where user-supplied values for from.name, subject, custom header keys/values, and attachment filenames were interpolated directly into raw MIME messages without sanitization. An authenticated API user could inject arbitrary email headers (e.g. Bcc, Reply-To) by embedding carriage return/line feed characters in these fields, enabling silent email forwarding, reply redirection, or sender spoofing. The fix adds input validation at the schema level to reject any of these fields containing \r or \n characters, consistent with the existing validation already applied to the contentId field. This vulnerability is fixed in 0.8.0.
Severity
8.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/useplunk/plunk/security/adviso… | x_refsource_CONFIRM |
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CVE-2026-35504 (GCVE-0-2026-35504)
Vulnerability from cvelistv5 – Published: 2026-05-12 20:19 – Updated: 2026-05-12 21:12
VLAI
Title
Subnet Solutions PowerSYSTEM Center CRLF injection
Summary
PowerSYSTEM Center email notification service is affected by a CRLF injection vulnerability when using SMTPS communication.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-93 - Improper neutralization of CRLF sequences ('CRLF injection')
Assigner
References
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Subnet Solutions | PowerSYSTEM Center 2020 |
Affected:
0 , ≤ 5.28.x
(custom)
|
|
| Subnet Solutions | PowerSYSTEM Center 2024 |
Affected:
6.0.x , ≤ 6.1.x
(custom)
|
|
| Subnet Solutions | PowerSYSTEM Center 2026 |
Affected:
7.0.x
|
Date Public
2026-05-13 05:00
Credits
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CVE-2026-35517 (GCVE-0-2026-35517)
Vulnerability from cvelistv5 – Published: 2026-04-07 15:16 – Updated: 2026-04-07 18:19
VLAI
Title
Pi-hole FTL affected by Remote Code Execution (RCE) via dns.upstreams Newline Injection
Summary
FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, the Pi-hole FTL engine contains a Remote Code Execution (RCE) vulnerability in the upstream DNS servers configuration parameter (dns.upstreams). This vulnerability allows an authenticated attacker to inject arbitrary dnsmasq configuration directives through newline characters, ultimately achieving command execution on the underlying system. This vulnerability is fixed in 6.6.
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pi-hole/FTL/security/advisorie… | x_refsource_CONFIRM |
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CVE-2026-35518 (GCVE-0-2026-35518)
Vulnerability from cvelistv5 – Published: 2026-04-07 15:17 – Updated: 2026-04-08 14:55
VLAI
Title
Pi-hole FTL affected by Remote Code Execution (RCE) via dns.cnameRecords Newline Injection
Summary
FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, the Pi-hole FTL engine contains a Remote Code Execution (RCE) vulnerability in the DNS CNAME records configuration parameter (dns.cnameRecords). This vulnerability allows an authenticated attacker to inject arbitrary dnsmasq configuration directives through newline characters, ultimately achieving command execution on the underlying system. This vulnerability is fixed in 6.6.
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pi-hole/FTL/security/advisorie… | x_refsource_CONFIRM |
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CVE-2026-35519 (GCVE-0-2026-35519)
Vulnerability from cvelistv5 – Published: 2026-04-07 15:18 – Updated: 2026-04-09 16:19
VLAI
Title
Pi-hole FTL affected by Remote Code Execution (RCE) via dns.hostRecord Newline Injection
Summary
FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, the Pi-hole FTL engine contains a Remote Code Execution (RCE) vulnerability in the DNS host record configuration parameter (dns.hostRecord). This vulnerability allows an authenticated attacker to inject arbitrary dnsmasq configuration directives through newline characters, ultimately achieving command execution on the underlying system. This vulnerability is fixed in 6.6.
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pi-hole/FTL/security/advisorie… | x_refsource_CONFIRM |
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CVE-2026-35520 (GCVE-0-2026-35520)
Vulnerability from cvelistv5 – Published: 2026-04-07 15:19 – Updated: 2026-04-09 14:35
VLAI
Title
Pi-hole FTL affected by Remote Code Execution (RCE) via dhcp.leaseTime Newline Injection
Summary
FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, the Pi-hole FTL engine contains a Remote Code Execution (RCE) vulnerability in the DHCP lease time configuration parameter (dhcp.leaseTime). This vulnerability allows an authenticated attacker to inject arbitrary dnsmasq configuration directives through newline characters, ultimately achieving command execution on the underlying system. This vulnerability is fixed in 6.6.
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pi-hole/FTL/security/advisorie… | x_refsource_CONFIRM |
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CVE-2026-35521 (GCVE-0-2026-35521)
Vulnerability from cvelistv5 – Published: 2026-04-07 15:20 – Updated: 2026-04-07 18:21
VLAI
Title
Pi-hole FTL affected by Remote Code Execution (RCE) via dhcp.hosts Newline Injection
Summary
FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, the Pi-hole FTL engine contains a Remote Code Execution (RCE) vulnerability in the DHCP hosts configuration parameter (dhcp.hosts). This vulnerability allows an authenticated attacker to inject arbitrary dnsmasq configuration directives through newline characters, ultimately achieving command execution on the underlying system. This vulnerability is fixed in 6.6.
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pi-hole/FTL/security/advisorie… | x_refsource_CONFIRM |
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CVE-2026-35601 (GCVE-0-2026-35601)
Vulnerability from cvelistv5 – Published: 2026-04-10 16:08 – Updated: 2026-04-13 15:37
VLAI
Title
Vikunja has an iCalendar Property Injection via CRLF in CalDAV Task Output
Summary
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 iCalendar property boundary, allowing injection of arbitrary iCalendar properties such as ATTACH, VALARM, or ORGANIZER. This vulnerability is fixed in 2.3.0.
Severity
4.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/go-vikunja/vikunja/security/ad… | x_refsource_CONFIRM |
| https://github.com/go-vikunja/vikunja/pull/2580 | x_refsource_MISC |
| https://github.com/go-vikunja/vikunja/releases/ta… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| go-vikunja | vikunja |
Affected:
< 2.3.0
|
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CVE-2026-3633 (GCVE-0-2026-3633)
Vulnerability from cvelistv5 – Published: 2026-03-17 09:44 – Updated: 2026-03-19 20:57
VLAI
Title
Libsoup: libsoup: header and http request injection via crlf injection
Summary
A flaw was found in libsoup. A remote attacker, by controlling the method parameter of the `soup_message_new()` function, could inject arbitrary headers and additional request data. This vulnerability, known as CRLF (Carriage Return Line Feed) injection, occurs because the method value is not properly escaped during request line construction, potentially leading to HTTP request injection.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-3633 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2445128 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/libsoup/-/issues/484 |
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
2026-03-06 05:05
Credits
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CVE-2026-3634 (GCVE-0-2026-3634)
Vulnerability from cvelistv5 – Published: 2026-03-17 09:44 – Updated: 2026-03-19 20:55
VLAI
Title
Libsoup: libsoup: http header injection and response splitting via crlf injection in content-type header
Summary
A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-3634 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2445129 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/libsoup/-/issues/485 |
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
2026-03-06 05:05
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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.