Project: jinja2

Language python
OSS-Fuzz project link
Project repository link
Build status: Fuzzers succeeding: Build log
Build status: Code coverage succeeding: Build log
Build status: Fuzz Introspector succeeding: Build log
Fuzzer count 3
Lines of code 6021
Lines covered 4251
Code coverage 70.60%
Code coverage report Report link
Static reachability 12.06%
Fuzz Introspector report Report link (from 2025-07-23)

Historical Progression

Functions of interest to fuzz

This section outlines functions that may be of interest to fuzz. They are based on ranking functions that have a lot of complexity but currently exhibit low code coverage. The complexity is calculated based on the function itself as well as the functions called by the given function, i.e. the tree of code that the function triggers.


This is only a minor amount of introspection information available for this project. Please consult the Fuzz Introspector report for more information, e.g. the introspection table of all functions in the target project available here.

Function name Function source file Accumulated cyclomatic complexity Code coverage
jinja2.ext.babel_extract jinja2.ext 451 0.0%
...fuzz_jinja_compile_expr.TestOneInput ...fuzz_jinja_compile_expr 387 14.28%
jinja2.environment.Environment.parse jinja2.environment 340 0.0%
jinja2.parser.Parser.parse_autoescape jinja2.parser 295 0.0%
jinja2.compiler.CodeGenerator.visit_OverlayScope jinja2.compiler 130 0.0%
jinja2.ext.InternationalizationExtension.parse jinja2.ext 125 0.0%
jinja2.compiler.CodeGenerator.visit_FromImport jinja2.compiler 118 0.0%
jinja2.compiler.CodeGenerator.visit_Scope jinja2.compiler 109 0.0%
jinja2.compiler.CodeGenerator.visit_ScopedEvalContextModifier jinja2.compiler 94 0.0%
jinja2.filters.do_urlize jinja2.filters 90 0.0%