Description: Writing unvalidated base64 content directly to disk can allow path-based or storage abuse
if upstream 'response.contents' or 'fileName' are attacker-controlled; ensure 'fileName'
and content source are trusted and validated.
webdriver.js [1740-1744]

fs.mkdirSync(targetDirectory,{recursive:true})constzipFilePath=path.join(targetDirectory,`${fileName}.zip`)fs.writeFileSync(zipFilePath,base64Content,'base64')constzipData=fs.readFileSync(zipFilePath)

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Follow theguide to enable codebase context checks.

Objective: Ensure all identifiers clearly express their purpose and intent, making code
self-documenting

Status: Passed

Objective: To prevent the leakage of sensitive system information through error messages while
providing sufficient detail for internal debugging.

Status: Passed

Objective: To create a detailed and reliable record of critical system actions for security analysis
and compliance.

Status:
Missing audit logging: The new file write of decoded base64 content is not logged, so it’s unclear which
user/action triggered the write and its outcome.

fs.mkdirSync(targetDirectory,{recursive:true})constzipFilePath=path.join(targetDirectory,`${fileName}.zip`)fs.writeFileSync(zipFilePath,base64Content,'base64')constzipData=fs.readFileSync(zipFilePath)awaitJSZip.loadAsync(zipData)

Objective: Ensure comprehensive error handling that provides meaningful context and graceful
degradation

Status:
Unhandled write errors: The direct call to fs.writeFileSync with base64 encoding lacks try/catch or error handling
for invalid base64, I/O failures, or permission issues.

fs.mkdirSync(targetDirectory,{recursive:true})constzipFilePath=path.join(targetDirectory,`${fileName}.zip`)fs.writeFileSync(zipFilePath,base64Content,'base64')constzipData=fs.readFileSync(zipFilePath)awaitJSZip.loadAsync(zipData)

Objective: To ensure logs are useful for debugging and auditing without exposing sensitive
information like PII, PHI, or cardholder data.

Status:
No redaction assurance: Writing decoded content to disk may involve sensitive data, and there is no accompanying
structured logging or confirmation that sensitive content is not logged elsewhere.

fs.mkdirSync(targetDirectory,{recursive:true})constzipFilePath=path.join(targetDirectory,`${fileName}.zip`)fs.writeFileSync(zipFilePath,base64Content,'base64')constzipData=fs.readFileSync(zipFilePath)awaitJSZip.loadAsync(zipData)

Objective: Ensure all data inputs are validated, sanitized, and handled securely to prevent
vulnerabilities

Status:
Unvalidated input: The base64 input from response.contents is written directly without validation of encoding
correctness, size limits, or path safety for targetDirectory/fileName.

constbase64Content=response.contentsif(!targetDirectory.endsWith('/')){targetDirectory+='/'}fs.mkdirSync(targetDirectory,{recursive:true})constzipFilePath=path.join(targetDirectory,`${fileName}.zip`)fs.writeFileSync(zipFilePath,base64Content,'base64')

Replace theforEach loop withPromise.all andmap to correctly await the
asynchronous file writing operations and prevent a race condition. Also, use
path.join for constructing file paths.

javascript/selenium-webdriver/lib/webdriver.js [1748-1752]

-Object.keys(zip.files).forEach(async (fileName) => {-  const fileData = await zip.files[fileName].async('nodebuffer')-  fs.writeFileSync(`${targetDirectory}/${fileName}`, fileData)-  console.log(`File extracted: ${fileName}`)-})+await Promise.all(+  Object.keys(zip.files).map(async (fileName) => {+    const fileData = await zip.files[fileName].async('nodebuffer')+    fs.writeFileSync(path.join(targetDirectory, fileName), fileData)+    console.log(`File extracted: ${fileName}`)+  }),+)

[To ensure code accuracy, apply this suggestion manually]

Re-throw the error inside the.catch block to ensure that failures during the
unzipping process are propagated to the caller of thedownloadFile function.

javascript/selenium-webdriver/lib/webdriver.js [1754-1756]

 .catch((error) => {   console.error('Error unzipping file:', error)+  throw error })

[To ensure code accuracy, apply this suggestion manually]

Improve efficiency by passing thebase64Content string directly to
JSZip.loadAsync with the{ base64: true } option, thus avoiding the unnecessary
step of writing to and reading from a temporary zip file.

javascript/selenium-webdriver/lib/webdriver.js [1742-1745]

-fs.writeFileSync(zipFilePath, base64Content, 'base64')+// The zip file does not need to be written to disk.+// fs.writeFileSync(zipFilePath, base64Content, 'base64')-const zipData = fs.readFileSync(zipFilePath)-await JSZip.loadAsync(zipData)+// const zipData = fs.readFileSync(zipFilePath)+await JSZip.loadAsync(base64Content, { base64: true })

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