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System Status: Operational
All tags
8 articles

#JavaScript

All CosmicBytez Labs articles tagged #JavaScript, across news, security advisories, how-to guides, and projects.

  • SecurityJun 23, 2026

    CVE-2026-12866: expr-eval npm Package Enables Arbitrary Code Execution via toJSFunction()

    All versions of the expr-eval JavaScript package are vulnerable to remote code execution through the toJSFunction() API. Crafted expressions escape the...

  • SecurityJun 12, 2026

    CVE-2026-44488: Axios Fetch Adapter Ignores Configured Request and Response Size Limits

    Axios versions 1.7.0 through 1.15.x fail to enforce maxContentLength and maxBodyLength when using the fetch adapter, allowing unbounded request and...

  • NewsJun 6, 2026

    Suspicious Polyfill Login Prompts Pop Up on Toshiba, Muji Websites

    Tech giant Toshiba and mega-retailer Muji have warned visitors that suspicious sign-in screens appearing on their websites could be harvesting credentials — a…

  • NewsApr 22, 2026

    New npm Supply Chain Attack Self-Spreads to Steal Developer

    A newly discovered supply chain attack targeting the npm ecosystem steals developer authentication tokens and uses compromised accounts to publish...

  • NewsApr 18, 2026

    Critical Flaw in protobuf.js Library Enables JavaScript

    A critical remote code execution vulnerability in protobuf.js, the widely used JavaScript implementation of Google's Protocol Buffers, has been disclosed...

  • NewsMar 14, 2026

    AppsFlyer Web SDK Supply Chain Attack Spread

    Attackers hijacked AppsFlyer's CDN domain via a registrar incident, serving a sophisticated 170 KB crypto-stealing JavaScript payload to every site...

  • HOWTOFeb 2, 2026

    Building PWAs with IndexedDB for Offline Data

    Implement offline data persistence in Progressive Web Apps using IndexedDB. Covers database abstraction, CRUD operations, migration strategies, and sync...

  • NewsJan 18, 2026

    Supply Chain Attack Discovered in Popular NPM Packages

    Security researchers have discovered malicious code injected into several popular NPM packages with millions of weekly downloads. Developers urged to...