CodeQL query help for Java¶

Visit the articles below to see the documentation for the queries included in the following query suites:

code-scanning: queries run by default in CodeQL code scanning on GitHub.
security-extended: queries from code-scanning, plus extra security queries with slightly lower precision and severity.
security-and-quality: queries from code-scanning, security-extended, plus extra maintainability and reliability queries.

These queries are published in the CodeQL query pack codeql/java-queries (changelog, source).

For shorter queries that you can use as building blocks when writing your own queries, see the example queries in the CodeQL repository.

Access to unsupported JDK-internal API
Android Intent redirection
Android Webview debugging enabled
Android WebView that accepts all certificates
Android debuggable attribute enabled
Android fragment injection
Android fragment injection in PreferenceActivity
Android sensitive keyboard cache
AnnotationPresent check
Application backup allowed
Arbitrary file write during archive extraction (”Zip Slip”)
Array index out of bounds
Bad implementation of an event Adapter
Bad suite method
Boxed variable is never null
Building a command line with string concatenation
Call to Iterator.remove may fail
Cast from abstract to concrete collection
Chain of ‘instanceof’ tests
Character passed to StringBuffer or StringBuilder constructor
Class has same name as super class
Cleartext storage of sensitive information in cookie
Cleartext storage of sensitive information in the Android filesystem
Cleartext storage of sensitive information using ‘Properties’ class
Cleartext storage of sensitive information using SharedPreferences on Android
Cleartext storage of sensitive information using a local database on Android
Comparison of identical values
Comparison of narrow type with wide type in loop condition
Confusing method names because of capitalization
Confusing non-overriding of package-private method
Confusing overloading of methods
Constant interface anti-pattern
Constant loop condition
Container contents are never accessed
Container contents are never initialized
Container size compared to zero
Continue statement that does not continue
Contradictory type checks
Creates empty ZIP file entry
Cross-site scripting
Dangerous non-short-circuit logic
Dangerous runFinalizersOnExit
Depending upon JCenter/Bintray as an artifact repository
Deprecated method or constructor invocation
Dereferenced expression may be null
Dereferenced variable is always null
Dereferenced variable may be null
Deserialization of user-controlled data
Detect JHipster Generator Vulnerability CVE-2019-16303
Direct call to a run() method
Disabled Netty HTTP header validation
Disabled Spring CSRF protection
Double-checked locking is not thread-safe
Equals method does not inspect argument type
Equals on incomparable types
Equals or hashCode on arrays
Executing a command with a relative path
Exposing internal representation
Expression always evaluates to the same value
Expression language injection (JEXL)
Expression language injection (MVEL)
Expression language injection (Spring)
Externalizable but no public no-argument constructor
Failure to use HTTPS or SFTP URL in Maven artifact upload/download
Failure to use secure cookies
Field masks field in super class
Finalizer inconsistency
Futile synchronization on field
Groovy Language injection
HTTP response splitting
Hard-coded credential in API call
Hashed value without hashCode definition
Ignored error status of call
Implicit conversion from array to string
Implicit narrowing conversion in compound assignment
Implicitly exported Android component
Improper validation of user-provided array index
Improper validation of user-provided size used for array construction
Improper verification of intent by broadcast receiver
Inconsistent compareTo
Inconsistent equals and hashCode
Inconsistent synchronization for writeObject()
Inconsistent synchronization of getter and setter
Incorrect absolute value of random number
Incorrect serialVersionUID field
Inefficient String constructor
Inefficient empty string test
Inefficient output stream
Inefficient primitive constructor
Inefficient regular expression
Inefficient use of key set iterator
Information exposure through a stack trace
Inner class could be static
Insecure Bean Validation
Insecure JavaMail SSL Configuration
Insecure basic authentication
Insertion of sensitive information into log files
Intent URI permission manipulation
Interface cannot be implemented
Iterable wrapping an iterator
Iterator implementing Iterable
JNDI lookup with user-controlled name
Javadoc has impossible ‘throws’ tag
LDAP query built from user-controlled sources
Leaking sensitive information through an implicit Intent
Left shift by more than the type width
Lines of code in files
Lines of commented-out code in files
Lines of comments in files
Local information disclosure in a temporary directory
Log Injection
Loop with unreachable exit condition
Misleading indentation
Missing JWT signature check
Missing Override annotation
Missing catch of NumberFormatException
Missing enum case in switch
Missing format argument
Missing read or write permission in a content provider
Missing space in string literal
Missing super clone
Multiplication of remainder
Next in hasNext implementation
No clone method
Non-final method invocation in constructor
Non-synchronized override of synchronized method
Number of tests
OGNL Expression Language statement with user-controlled input
Overloaded compareTo
Overloaded equals
Overly permissive regular expression range
Partial path traversal vulnerability
Partial path traversal vulnerability from remote
Polynomial regular expression used on uncontrolled data
Possible confusion of local and field
Potential database resource leak
Potential input resource leak
Potential output resource leak
Query built from user-controlled sources
Query built without neutralizing special characters
Race condition in double-checked locking object initialization
Race condition in socket authentication
Random used only once
ReadResolve must have Object return type, not void
Reading from a world writable file
Reference equality test of boxed types
Reference equality test on strings
Resolving XML external entity in user-controlled data
Result of multiplication cast to wider type
Self assignment
Serializable but no void constructor
Serializable inner class of non-serializable class
Serialization methods do not match required signature
Server-side request forgery
Server-side template injection
Sleep with lock held
Spin on field
Spurious Javadoc @param tags
Start of thread in constructor
Subtle call to inherited method
Suspicious date format
Synchronization on boxed types or strings
Thread-unsafe use of DateFormat
Time-of-check time-of-use race condition
Type bound extends a final class
Type mismatch on container access
Type mismatch on container modification
Type variable hides another type
Typo in equals
Typo in hashCode
Typo in toString
URL redirection from remote source
Uncontrolled command line
Uncontrolled data in arithmetic expression
Uncontrolled data used in content resolution
Uncontrolled data used in path expression
Underscore used as identifier
Unreachable catch clause
Unread local variable
Unreleased lock
Unsafe certificate trust
Unsafe hostname verification
Unsafe resource fetching in Android WebView
Unsafe use of getResource
Unused classes and interfaces
Unused format argument
Unused label
Use of RSA algorithm without OAEP
Use of a broken or risky cryptographic algorithm
Use of a cryptographic algorithm with insufficient key size
Use of a potentially broken or risky cryptographic algorithm
Use of a potentially dangerous function
Use of a predictable seed in a secure random number generator
Use of default toString()
Use of externally-controlled format string
Use of implicit PendingIntents
Useless comparison test
Useless null check
Useless parameter
Useless toString on String
Useless type test
User-controlled bypass of sensitive method
User-controlled data in arithmetic expression
User-controlled data in numeric cast
User-controlled data used in permissions check
Using a static initialization vector for encryption
Wait on condition
Whitespace contradicts operator precedence
Wrong NaN comparison
XPath injection
XSLT transformation with user-controlled stylesheet
TrustManager that accepts all certificates
notify instead of notifyAll