Security Vulnerabilities
Apache Log4j Core's Rfc5424Layout https://logging.apache.org/log4j/2.x/manual/layouts.html#RFC5424Layout , in versions 2.21.0 through 2.25.3, is vulnerable to log injection via CRLF sequences due to undocumented renames of security-relevant configuration attributes.
Two distinct issues affect users of stream-based syslog services who configure Rfc5424Layout directly:
* The newLineEscape attribute was silently renamed, causing newline escaping to stop working for users of TCP framing (RFC 6587), exposing them to CRLF injection in log output.
* The useTlsMessageFormat attribute was silently renamed, causing users of TLS framing (RFC 5425) to be silently downgraded to unframed TCP (RFC 6587), without newline escaping.
Users of the SyslogAppender are not affected, as its configuration attributes were not modified.
Users are advised to upgrade to Apache Log4j Core 2.25.4, which corrects this issue.
CVSS Score
6.9
EPSS Score
0.002
Published
2026-04-10
Apache Log4j Core's XmlLayout https://logging.apache.org/log4j/2.x/manual/layouts.html#XmlLayout , in versions up to and including 2.25.3, fails to sanitize characters forbidden by the XML 1.0 specification https://www.w3.org/TR/xml/#charsets producing invalid XML output whenever a log message or MDC value contains such characters.
The impact depends on the StAX implementation in use:
* JRE built-in StAX: Forbidden characters are silently written to the output, producing malformed XML. Conforming parsers must reject such documents with a fatal error, which may cause downstream log-processing systems to drop the affected records.
* Alternative StAX implementations (e.g., Woodstox https://github.com/FasterXML/woodstox , a transitive dependency of the Jackson XML Dataformat module): An exception is thrown during the logging call, and the log event is never delivered to its intended appender, only to Log4j's internal status logger.
Users are advised to upgrade to Apache Log4j Core 2.25.4, which corrects this issue by sanitizing forbidden characters before XML output.
CVSS Score
6.9
EPSS Score
0.002
Published
2026-04-10
Apache Log4j's JsonTemplateLayout https://logging.apache.org/log4j/2.x/manual/json-template-layout.html , in versions up to and including 2.25.3, produces invalid JSON output when log events contain non-finite floating-point values (NaN, Infinity, or -Infinity), which are prohibited by RFC 8259. This may cause downstream log processing systems to reject or fail to index affected records.
An attacker can exploit this issue only if both of the following conditions are met:
* The application uses JsonTemplateLayout.
* The application logs a MapMessage containing an attacker-controlled floating-point value.
Users are advised to upgrade to Apache Log4j JSON Template Layout 2.25.4, which corrects this issue.
CVSS Score
6.3
EPSS Score
0.002
Published
2026-04-10
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the OIDC callback handler issues a full JWT token without checking whether the matched user has TOTP two-factor authentication enabled. When a local user with TOTP enrolled is matched via the OIDC email fallback mechanism, the second factor is completely skipped. This vulnerability is fixed in 2.3.0.
CVSS Score
7.4
EPSS Score
0.0
Published
2026-04-10
CouchCMS contains a privilege escalation vulnerability that allows authenticated Admin-level users to create SuperAdmin accounts by tampering with the f_k_levels_list parameter in user creation requests. Attackers can modify the parameter value from 4 to 10 in the HTTP request body to bypass authorization validation and gain full application control, circumventing restrictions on SuperAdmin account creation and privilege assignment.
CVSS Score
8.6
EPSS Score
0.0
Published
2026-04-10
HDF5 is software for managing data. In 1.14.1-2 and earlier, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition in the H5T__ref_mem_setnull method. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on the practical exploitability of the heap overflow against modern operating systems.
CVSS Score
5.5
EPSS Score
0.0
Published
2026-04-10
A SQL injection vulnerability was found in the scheduleSubList.php file of itsourcecode Online Student Enrollment System v1.0. The reason for this issue is that the 'subjcode' parameter is directly embedded into the SQL query via string interpolation without any sanitization or validation.
CVSS Score
9.8
EPSS Score
0.0
Published
2026-04-10
SourceCodester Engineers Online Portal v1.0 is vulnerable to SQL Injection in update_password.php via the new_password parameter.
CVSS Score
9.8
EPSS Score
0.0
Published
2026-04-10
A SQL injection vulnerability was found in the instructorClasses.php file of itsourcecode Online Student Enrollment System v1.0. The reason for this issue is that the 'classId' parameter from $_GET['classId'] is directly concatenated into the SQL query without any sanitization or validation.
CVSS Score
9.8
EPSS Score
0.0
Published
2026-04-10
A SQL injection vulnerability was found in the assignInstructorSubjects.php file of itsourcecode Online Student Enrollment System v1.0. The reason for this issue is that attackers can inject malicious code via the parameter "subjcode" and use it directly in SQL queries without the need for appropriate cleaning or validation.
CVSS Score
9.8
EPSS Score
0.0
Published
2026-04-10