Security Research

Security Blog

Page 34

high6 min

How Weak bcrypt Salt Rounds Happen in Node.js and How to Fix It

A critical password hashing weakness was discovered in the authentication controller where bcrypt was configured with only 10 salt rounds instead of the recommended minimum of 12. This configuration made user passwords significantly more vulnerable to brute-force attacks if an attacker gained access to the password hash database. The fix was a simple but impactful one-line change that doubles the computational cost required to crack passwords.

#security#password-hashing#bcrypt+4 more
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anupamme
Aug 16, 2026
high8 min

How CSRF protection gaps happen in Express.js applications and how to fix it

A high-severity security vulnerability was discovered in a React-Express booking application where the Express backend lacked CSRF middleware protection, while the frontend's coupon code input field in `Listing.jsx` allowed unrestricted user input. The fix implemented strict input validation using a regex pattern that whitelists only alphanumeric characters, hyphens, and underscores, preventing malicious payloads from reaching backend database operations.

#csrf#express#security+4 more
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anupamme
Aug 16, 2026
critical6 min

How Insufficient Input Validation happens in TypeScript and how to fix it

A critical input validation vulnerability was discovered in `src/mcp/presets/commerce/inputs.ts` where the `normalizeCommerceAccountInput` function accepted loosely-typed `Record<string, any>` arguments without verifying field types or object structure. This allowed attackers to inject malicious payloads through MCP tool invocations. The fix adds explicit type guards and structural validation to ensure only properly-typed string values reach downstream consumers.

#security#input-validation#typescript+4 more
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anupamme
Aug 15, 2026
critical8 min

How Supply Chain Timing Attacks happen in pnpm Workspaces and how to fix it

The apple-mail-mcp repository was vulnerable to supply chain timing attacks because its pnpm workspace configuration only enforced a 1-day (1440 minute) minimum release age for newly published packages. This allowed a 5-day-old transitive dependency (ip-address@10.5.0) to be installed despite Dependabot's 7-day cooldown, creating a window where malicious or unstable packages could enter the dependency tree. The fix raises minimumReleaseAge to 10080 minutes (7 days) to ensure all packages—includi

#security#supply-chain-security#pnpm+5 more
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anupamme
Aug 15, 2026
high7 min

How Command Injection happens in Node.js child_process calls and how to fix it

A high-severity command injection vulnerability was discovered in `src/collectors/git.ts`, where `execSync` was used to build a shell command by interpolating unsanitized arguments into a template string. By replacing `execSync` with `spawnSync`, the fix eliminates shell interpretation entirely, ensuring that git arguments are passed directly to the process without ever touching a shell. This change is especially important for a Node.js library, where downstream consumers may pass user-controlle

#security#command-injection#nodejs+4 more
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anupamme
Aug 15, 2026
high7 min

How Supply Chain Risk from Missing Package Age Validation Happens in pnpm and How to Fix It

A pnpm workspace configuration was missing the `minimumReleaseAge` setting, creating a supply chain vulnerability where newly published (and potentially malicious) packages could be installed immediately. By adding a 10,080-minute (7-day) minimum release age to `pnpm-workspace.yaml`, the project now enforces a critical delay that allows the security community time to identify and report malicious or unstable packages before they reach production environments.

#security#supply-chain-security#pnpm+5 more
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anupamme
Aug 15, 2026
critical5 min

How Path Traversal Vulnerabilities Happen in Node.js Development Servers and How to Fix Them

A critical path traversal vulnerability was discovered in the development file server script `serve.mjs`, where arbitrary directory paths from command-line arguments were accepted without validation. This flaw could allow attackers to serve any directory on the filesystem over HTTP, potentially exposing sensitive system files like `/etc/passwd` or application secrets. The fix adds a simple but effective validation check ensuring the serve root stays within the current working directory.

#security#path-traversal#nodejs+4 more
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anupamme
Aug 15, 2026
critical8 min

How Plaintext Credential Storage happens in JSON Configuration Files and how to fix it

A critical security issue was discovered in `assets/settings/global.json` where a real phone number (PII) was stored in plaintext alongside placeholder patterns for API keys and payment credentials. This design encouraged developers to substitute real credentials directly into a version-controlled file, creating a high risk of credential exposure via repository access or filesystem reads. The fix replaces the hardcoded phone number with a placeholder and reinforces safe configuration patterns.

#security#credentials#json+4 more
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anupamme
Aug 15, 2026
high6 min

How Prototype Pollution Happens in Vue I18n's handleFlatJson and How to Fix It

CVE-2025-27597 is a prototype pollution vulnerability in @intlify/core-base's `handleFlatJson` function that could allow attackers to pollute the JavaScript prototype chain through maliciously crafted internationalization data. The fix upgrades @intlify/core-base from version 9.1.9 to 11.1.10, which implements stricter input handling to prevent untrusted data from modifying object prototypes.

#security#prototype-pollution#vue-i18n+5 more
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anupamme
Aug 15, 2026
high10 min

How Email Exhaustion Denial of Service Happens in Node.js OTP Endpoints and How to Fix It

A Node.js authentication service exposed unauthenticated OTP endpoints without adequate rate limiting, allowing attackers to exhaust email service quotas through repeated requests. The fix implements per-session resend caps and cooldown enforcement to prevent email-based denial of service attacks while preserving legitimate user workflows.

#security#rate-limiting#denial-of-service+5 more
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anupamme
Aug 14, 2026
high9 min

How Unauthenticated Denial of Service happens in React Router and how to fix it

CVE-2026-55685 is a high-severity Denial of Service vulnerability in React Router's `@remix-run/server-runtime` that allows unauthenticated attackers to exhaust server resources by sending crafted requests to the manifest endpoint. The fix upgrades `react-router` from version 7.17.0 to 7.18.0, which tightens handling of untrusted input in route matching logic. Developers using any React Router 7.x application with server-side rendering should apply this patch immediately.

#security#denial-of-service#react-router+5 more
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anupamme
Aug 14, 2026
medium5 min

How GitHub Actions Mutable Action Tags Enable Supply-Chain Attacks and How to Fix Them

A GitHub Actions workflow was using `actions/checkout@v1`, a mutable tag reference that could be silently repointed by the action owner to inject malicious code. This supply-chain vulnerability was fixed by pinning the action to a specific commit SHA (`11bd71901bbe5b1630ceea73d27597364c9af683`), ensuring the workflow always executes verified, immutable code.

#security#github-actions#supply-chain-security+5 more
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anupamme
Aug 14, 2026