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MCreator/MCreator

https://github.com/MCreator/MCreator · scanned 2026-06-05 20:04 UTC (4 days, 14 hours ago) · 10 languages

161 raw signals (95 security + 66 graph) 11/13 scanners ran 21st percentile · Java · large (100-500K LoC) System graph score 91 (lower by 24)

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UNIFIED Repobility · multi-layer engine · AI coders

Complete repo analysis

Last scanned 4 days, 14 hours ago · v2 · 36 actionable findings from 2 signal sources. 90 repeated signals grouped for readability. Security checks, system graph analysis, and verified AI-agent feedback are merged into one review queue.

JSON
Combined
84.2
/100
Security checks
77
20 findings
System graph
91
88.9% cov · 16 findings
Critical
1
click to filter
Agents
6
0 votes
Crowd
0
reported
Score breakdown â 2026-05-18-v5
Component Sub-score Weight Contribution
structure_score 65.0 0.15 9.75
security_score 100.0 0.25 25.00
testing_score 15.0 0.20 3.00
documentation_score 75.0 0.15 11.25
practices_score 65.0 0.15 9.75
code_quality 80.0 0.10 8.00
Overall 1.00 66.8
security_score may be inflated — optional security scanners were skipped on this fast scan
Severity distribution — click a segment to filter
Active filters: excluding tests × Reset all
Severity: Critical 1 High 4 Medium 7 Low 10 9-Layer: Software Security Quality Integrity Frontend Hardware Data Network Cicd Source: Security checks 20 System graph 16 Crowd 0 Layer: Software 5 Security 6 Quality 19 Cicd 4 Api 1 Frontend 1
Scan summary Quality grade B- (67/100). Dimensions: security 100, maintainability 65. 95 findings (41 security). 153,935 lines analyzed.

Showing 22 of 36 actionable findings. 126 raw detector signals were grouped into reader-sized issues. Click TP / FP to vote on a finding's accuracy — votes adjust the confidence weighting and improve detection across the platform.

critical Security checks security Deserialization conf 1.00 [SEC101] Unsafe Java object deserialization (ObjectInputStream): Java ObjectInputStream deserializes untrusted bytes into objects. Attacker-controlled streams trigger gadget chains (Apache Commons Collections, etc.) leading to RCE.
Avoid native Java serialization entirely. Use JSON (Jackson with default-typing OFF) or a length-limited Protobuf. If you must, set up a SerialKiller / lookahead-deserializer with a class allowlist.
src/main/java/net/mcreator/util/SingleAppHandler.java:68
high Security checks software dependencies conf 0.90 ✓ Repobility 8 occurrences [MINED134] Binary file `gradle/wrapper/gradle-wrapper.jar` committed in source repo: `gradle/wrapper/gradle-wrapper.jar` is a .jar binary (48,462 bytes) committed to a repo that otherwise has 1192 source files. Trojan binaries inside otherwise-normal source repos are a known supply-chain attack: a compromised dependency or PR slips in a binary that gets executed by build scripts.
Audit the binary's provenance. If it's vendored library code, document it in a VENDORED.md. If it's a build artifact, add the extension to .gitignore and rebuild from source.
8 files, 8 locations
gradle/wrapper/gradle-wrapper.jar:1
plugins/generator-1.21.1/datapack-1.21.1/workspacebase/gradle/wrapper/gradle-wrapper.jar:1
plugins/generator-1.21.1/neoforge-1.21.1/workspacebase/gradle/wrapper/gradle-wrapper.jar:1
plugins/generator-1.21.1/resourcepack-1.21.1/workspacebase/gradle/wrapper/gradle-wrapper.jar:1
plugins/generator-26.1.x/datapack-26.1.x/workspacebase/gradle/wrapper/gradle-wrapper.jar:1
plugins/generator-26.1.x/neoforge-26.1.2/workspacebase/gradle/wrapper/gradle-wrapper.jar:1
plugins/generator-26.1.x/resourcepack-26.1.x/workspacebase/gradle/wrapper/gradle-wrapper.jar:1
plugins/generator-addon-26.1x/addon-26.1x/workspacebase/gradle/wrapper/gradle-wrapper.jar:1
high Security checks software Xxe conf 1.00 3 occurrences [SEC024] XML External Entity (XXE) — Java parser default: Java XML parsers accept external entity references by default. An attacker can craft XML input that reads server files (file://), exfiltrates data via DNS, or causes denial of service via the 'billion laughs' attack.
Disable DTDs and external entities before parsing: factory.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true); factory.setFeature("http://xml.org/sax/features/external-general-entities", false); factory.setFeature("http://xml.org/sax/features/external-parameter-entities"…
3 files, 3 locations
src/main/java/net/mcreator/blockly/BlocklyTemplateIO.java:44
src/main/java/net/mcreator/blockly/datapack/BlocklyToEnchantmentEffects.java:60
src/main/java/net/mcreator/blockly/datapack/BlocklyToJSONTrigger.java:61
high Security checks security Crypto conf 1.00 [SEC106] Block cipher in ECB mode (AES/DES/Blowfish): ECB mode leaks block-level structure — identical plaintext blocks encrypt to identical ciphertext (the famous Tux image). Bare `Cipher.getInstance("AES")` defaults to ECB on most JVMs.
Use GCM (recommended): `Cipher.getInstance("AES/GCM/NoPadding")`. Or CBC with HMAC. Always pass an explicit IV; never reuse it for GCM.
src/main/java/net/mcreator/util/EncryptUtils.java:29
medium Security checks cicd CI/CD security conf 0.90 ✓ Repobility 14 occurrences GitHub Action is tag-pinned rather than SHA-pinned
[MINED115] Action `gradle/actions/dependency-submission` pinned to mutable ref `@v5`: `uses: gradle/actions/dependency-submission@v5` resolves at workflow-run time. Tags and branches can be re-pushed by the action owner; that made the tj-actions/changed-files compromise (2025) instantly affect ~23K…
4 files, 14 locations
.github/workflows/deploy.yml:44, 82, 128, 194 (8 hits)
.github/workflows/dependency-submission.yml:26 (2 hits)
.github/workflows/documentation.yml:23 (2 hits)
.github/workflows/test.yml:34 (2 hits)
CI/CD securitySupply chainGitHub Actions
low Security checks cicd CI/CD security conf 0.90 ✓ Repobility 28 occurrences GitHub Action is tag-pinned rather than SHA-pinned
[MINED115] Action `actions/checkout` pinned to mutable ref `@v6`: `uses: actions/checkout@v6` resolves at workflow-run time. Tags and branches can be re-pushed by the action owner; that made the tj-actions/changed-files compromise (2025) instantly affect ~23K repos. Pin to a 40-char commit SHA + lo…
6 files, 28 locations
.github/workflows/deploy.yml:25, 36, 72, 74, 118, 120, 184, 186, +1 more (13 hits)
.github/workflows/test.yml:24, 26, 36 (6 hits)
.github/workflows/dependency-submission.yml:15, 17 (4 hits)
.github/workflows/documentation.yml:12, 15 (3 hits)
.github/workflows/crowdin-pull.yml:12
.github/workflows/crowdin-push.yml:13
CI/CD securitySupply chainGitHub Actions
high System graph security security conf 1.00 Insecure pattern 'exec_used' in src/main/java/net/mcreator/ui/gradle/GradleConsole.java:353
Found a known-risky pattern (exec_used). Review and replace if possible.
src/main/java/net/mcreator/ui/gradle/GradleConsole.java:353 Exec used
medium Security checks security path traversal conf 1.00 3 occurrences [SEC012] ZipSlip — Archive Path Traversal: Archive extraction without path validation allows writing files outside the target directory.
Validate extracted paths with os.path.realpath() and ensure they stay within the target directory.
3 files, 3 locations
src/main/java/net/mcreator/generator/mapping/MappingLoader.java:89
src/main/java/net/mcreator/io/zip/ZipIO.java:72
src/main/java/net/mcreator/java/ClassFinder.java:116
medium Security checks software Resource exhaustion conf 1.00 [SEC115] Decompression without size cap (zip/gzip bomb): Decompressing untrusted archives without a size or ratio cap → memory/disk exhaustion DoS (10kb → 4GB classic 'zip bomb').
Wrap reader with `io.LimitReader(r, MAX_BYTES)`. In Python, iterate `ZipFile.infolist()` and check each entry's `file_size`. Cap total uncompressed bytes (e.g. 100MB).
src/main/java/net/mcreator/io/BinaryStringIO.java:68
medium System graph cicd CI/CD security conf 1.00 GitHub Actions workflow grants broad write permissions
CI tokens with write permissions increase blast radius when an action, dependency, or PR workflow is compromised. Prefer job-level least-privilege permissions.
.github/workflows/deploy.yml CI/CD securitySupply chainGithub actions
medium System graph cicd CI/CD security conf 1.00 GitHub Actions workflow grants broad write permissions
CI tokens with write permissions increase blast radius when an action, dependency, or PR workflow is compromised. Prefer job-level least-privilege permissions.
.github/workflows/dependency-submission.yml CI/CD securitySupply chainGithub actions
medium System graph security Coverage conf 1.00 No auth library detected
The scanner did not find any standard auth library (JWT, OAuth, NextAuth, Auth0, etc.). Either auth lives in custom code, in a separate service, or is missing.
auth
medium System graph quality Tests conf 1.00 Very low test-to-source ratio
0 test file(s) for 13 source file(s) (ratio 0.00). Consider adding integration or unit tests for critical paths.
Coverage
low Security checks quality Quality conf 0.60 26 occurrences Duplicated implementation block across source files
Duplicate implementation blocks are maintenance debt. Keep them visible, but they are not a high-severity defect unless the duplicated logic is security-sensitive or drifting.
12 files, 13 locations
src/main/java/net/mcreator/blockly/javascript/blocks/NumberBinaryOperationsBlock.java:7, 14 (2 hits)
plugins/generator-26.1.x/datapack-26.1.x/workspacebase/packloader/src/main/java/net/mcreator/packloader/PackLoaderMod.java:15
plugins/generator-26.1.x/resourcepack-26.1.x/workspacebase/packloader/src/main/java/net/mcreator/packloader/PackLoaderMod.java:15
plugins/mcreator-core/blockly/js/simple_repeating_input_mixins.js:11
src/main/java/net/mcreator/blockly/datapack/BlocklyToJSONTrigger.java:31
src/main/java/net/mcreator/blockly/java/blocks/MCItemBlock.java:9
src/main/java/net/mcreator/blockly/java/blocks/NumberBinaryOperationsBlock.java:15
src/main/java/net/mcreator/blockly/java/blocks/SetEventResultBlock.java:25
duplicationquality
low System graph quality Complexity conf 1.00 Very large file: src/main/java/net/mcreator/minecraft/MinecraftImageGenerator.java (1565 lines)
Files with >800 lines often hide complexity hotspots and discourage tests.
low System graph quality Complexity conf 1.00 Very large file: src/main/java/net/mcreator/ui/ide/mcfunction/MinecraftCommandsTokenMaker.java (1292 lines)
Files with >800 lines often hide complexity hotspots and discourage tests.
low System graph quality Complexity conf 1.00 Very large file: src/main/java/net/mcreator/ui/modgui/ArmorGUI.java (1113 lines)
Files with >800 lines often hide complexity hotspots and discourage tests.
low System graph quality Complexity conf 1.00 Very large file: src/main/java/net/mcreator/ui/modgui/BlockGUI.java (2080 lines)
Files with >800 lines often hide complexity hotspots and discourage tests.
low System graph quality Complexity conf 1.00 Very large file: src/main/java/net/mcreator/ui/modgui/LivingEntityGUI.java (1361 lines)
Files with >800 lines often hide complexity hotspots and discourage tests.
low System graph quality Complexity conf 1.00 Very large file: src/main/java/net/mcreator/ui/modgui/PlantGUI.java (1207 lines)
Files with >800 lines often hide complexity hotspots and discourage tests.
low System graph quality Complexity conf 1.00 Very large file: src/main/java/net/mcreator/ui/workspace/WorkspacePanel.java (1488 lines)
Files with >800 lines often hide complexity hotspots and discourage tests.
low System graph quality Complexity conf 1.00 Very large file: src/test/java/net/mcreator/integration/TestWorkspaceDataProvider.java (2968 lines)
Files with >800 lines often hide complexity hotspots and discourage tests.
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