Bump flatted from 3.3.3 to 3.4.2 - #15
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Bumps [flatted](https://github.com/WebReflection/flatted) from 3.3.3 to 3.4.2. - [Commits](WebReflection/flatted@v3.3.3...v3.4.2) --- updated-dependencies: - dependency-name: flatted dependency-version: 3.4.2 dependency-type: indirect ... Signed-off-by: dependabot[bot] <support@github.com>
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Dependency Verification: APPROVED
flatted 3.3.3 → 3.4.2 (minor bump)
Summary
- CI: No CI checks configured for this repository
- Risk: Very Low
- Type: Transitive dev dependency (via
flat-cache→ ESLint)
Security Fix
This update includes a fix for CWE-1321 (Prototype Pollution). The fix adds a unary + operator to coerce array index values to numbers, preventing potential prototype pollution attacks:
- const tmp = input [ value ] ;
+ const tmp = input [ + value ] ;Usage Analysis
- Direct usage: None found in source code
- Dependency chain:
flatted←flat-cache←eslint(dev dependency) - Impact: Dev-only, not shipped to production
Recommendation
✅ Safe to merge — This is a security patch for a transitive dev dependency with no breaking changes to the public API.
Technical Details
| Property | Value |
|---|---|
| Classifier Tier | standard |
| Tier Reasoning | Security advisory update with minor version bump requires investigation despite automated bot submission. No CI checks found to verify safety. |
| Verdict | APPROVE |
| Model | z-ai/glm-5-20260211 |
| Iterations | 6 |
| Reasoning | enabled |
| Duration | 70.4s |
| Auto-Verify | enabled |
| Auto-Approve Level | major |
| Auto-Merge Level | off |
| Tokens | Count | Cost |
|---|---|---|
| Input | 70,816 | $0.0567 |
| Output | 1,450 | $0.0037 |
| Total | $0.0604 |
Classifier overhead: 373 tokens ($0.0006)
Tools: shell x5, search_web, fetch_url x2
⚡️ Trace Log
🔷 Executed:
#!/bin/bash
# Check how flatted is used in the codebase
rg "flatted" -g "*.{ts,tsx,js,jsx,json}" -n --type-add 'lock:package-lock.json' -t lock 2>/dev/null || rg "flatted" -g "package*.json" -nLength of output: 204 chars
package-lock.json:2668: "flatted": "^3.2.9",
package-lock.json:2675: "node_modules/flatted": {
package-lock.json:2677: "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.4.2.tgz",
🔷 Executed:
#!/bin/bash
# Check package.json for flatted dependency
cat package.json 2>/dev/null | jq '.dependencies, .devDependencies' 2>/dev/null || cat package.jsonLength of output: 482 chars
{
"@tailwindcss/vite": "^4.1.10",
"react": "^19.1.0",
"react-dom": "^19.1.0",
"tailwindcss": "^4.1.10"
}
{
"@eslint/js": "^9.25.0",
"@types/node": "^24.10.0",
"@types/react": "^19.1.2",
"@types/react-dom": "^19.1.2",
"@vitejs/plugin-react": "^4.4.1",
"eslint": "^9.25.0",
"eslint-plugin-react-hooks": "^5.2.0",
"eslint-plugin-react-refresh": "^0.4.19",
"globals": "^16.0.0",
"typescript": "~5.8.3",
"typescript-eslint": "^8.30.1",
"vite": "^6.4.1"
}
🔷 Executed:
#!/bin/bash
# Check what package depends on flatted (it's a transitive dependency)
cat package-lock.json | jq '.packages["node_modules/flatted"], .packages[""]' 2>/dev/null | head -50Length of output: 904 chars
{
"version": "3.4.2",
"resolved": "https://registry.npmjs.org/flatted/-/flatted-3.4.2.tgz",
"integrity": "sha512-PjDse7RzhcPkIJwy5t7KPWQSZ9cAbzQXcafsetQoD7sOJRQlGikNbx7yZp2OotDnJyrDcbyRq3Ttb18iYOqkxA==",
"dev": true,
"license": "ISC"
}
{
"name": "timelogger-client",
"version": "0.0.0",
"dependencies": {
"@tailwindcss/vite": "^4.1.10",
"react": "^19.1.0",
"react-dom": "^19.1.0",
"tailwindcss": "^4.1.10"
},
"devDependencies": {
"@eslint/js": "^9.25.0",
"...
🔷 Executed:
#!/bin/bash
# Search for any direct usage of flatted in source code
rg "from ['\"]flatted" -g "*.{ts,tsx,js,jsx}" -n 2>/dev/null
rg "require\(['\"]flatted" -g "*.{ts,tsx,js,jsx}" -n 2>/dev/null
rg "import.*flatted" -g "*.{ts,tsx,js,jsx}" -n 2>/dev/nullLength of output: 298 chars
Command failed (exit code 1): Command failed: #!/bin/bash
# Search for any direct usage of flatted in source code
rg "from ['\"]flatted" -g "*.{ts,tsx,js,jsx}" -n 2>/dev/null
rg "require\(['\"]flatted" -g "*.{ts,tsx,js,jsx}" -n 2>/dev/null
rg "import.*flatted" -g "*.{ts,tsx,js,jsx}" -n 2>/dev/null
🔷 Executed:
#!/bin/bash
# Find what package depends on flatted (look for it in the lockfile)
rg '"flatted"' package-lock.json -B 5 -A 1 | head -40Length of output: 321 chars
"resolved": "https://registry.npmjs.org/flat-cache/-/flat-cache-4.0.1.tgz",
"integrity": "sha512-f7ccFPK3SXFHpx15UIGyRJ/FJQctuKZ0zVuN3frBo4HnK3cay9VEW0R6yPYFHC0AgqhukPzKjq22t5DmAyqGyw==",
"dev": true,
"license": "MIT",
"dependencies": {
"flatted": "^3.2.9",
"keyv": "^4.5.4"
🔷 Executed:
search_web(query="flatted 3.4.2 CWE-1321 security fix")
Length of output: 1938 chars
Found 5 results for "flatted 3.4.2 CWE-1321 security fix":
1. CWE-1321 - CWE Weakness Details & Mitigation
https://pentestreports.com/weaknesses/CWE-1321
Learn about CWE-1321 weakness.Understand the vulnerability category, common attack patterns, and remediation strategies for secure development.
2. CWE-1321 - Prototype Pollution - Details and CVSS Score
https://appsec.backslash.security/cwe/1321
CWE-1321 - <strong>The product receives input from an upstream component that specifie...
🔷 Executed:
fetch_url(url="https://github.com/WebReflection/flatted/releases", extraction_prompt="What are the changes in version 3.4.2? What security issue was fixed?")
Length of output: 641 chars
*Content from https://github.com/WebReflection/flatted/releases:*
# Summary
The web page content shows a GitHub releases page for the "flatted" repository, but **no release information is available**.
## Key Findings:
- **No releases exist**: The page displays the message "There aren't any releases here"
- **No version 3.4.2 information**: There is no data about version 3.4.2 or any other specific version
- **No security fixes listed**: No security issues or fixes are documented on this page...
🔷 Executed:
fetch_url(extraction_prompt="What was the security fix for CWE-1321? What code changes were made?", url="https://github.com/WebReflection/flatted/commit/885ddcc33cf9657caf38c57c7be45ae1c5272802")
Length of output: 1254 chars
*Content from https://github.com/WebReflection/flatted/commit/885ddcc33cf9657caf38c57c7be45ae1c5272802:*
# Security Fix Analysis for CWE-1321
## Information Available
The web page shows a GitHub commit from the `flatted` repository, but **does not explicitly mention CWE-1321 or provide a security fix description**.
## Code Changes Made
The commit modified **6 files** with identical changes across multiple build formats (cjs, es, esm, index, and min versions):
**Change Pattern:**
```
- const ...
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Bumps flatted from 3.3.3 to 3.4.2.
Commits
3bf09093.4.2885ddccfix CWE-13210bdba70added flatted-view to the benchmark2a02dce3.4.1fba4e8fMerge pull request #89 from WebReflection/python-fix5fe8648added "when in Rome" also a test for PHP53517adsome minor improvementb3e2a0cFixing recursion issue in Python tooc4b46dbAdd SECURITY.md for security policy and reportingf86d071Create dependabot.yml for version updatesDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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