Labs

Short research notes on newly disclosed vulnerabilities: the problem, the payload, and the fix.

• high

  pnpm Path Traversal via configDependencies Lockfile Entry Allows Symlink Escape

  A crafted pnpm-lock.yaml with a dot-dot package name in configDependencies tricks pnpm install into creating symlinks outside the intended node_modules/.pnpm-config directory, giving an attacker a…

• high

  pnpm Hoisted Lockfile Alias Path Traversal ()

  A crafted pnpm lockfile alias used with the hoisted node linker could escape node_modules entirely, writing package files to arbitrary paths on the filesystem.

• highCVE-2026-49339

  CVE-2026-49339: gonic Playlist ID Path Traversal Bypasses Ownership Check

  Any logged-in user of the gonic music server can read or delete another user's private playlists by crafting a playlist ID that smuggles directory traversal sequences past the ownership check.

• highCVE-2026-55698

  CVE-2026-55698: pnpm Env Lockfile Package-Manager Integrity Bypass

  A malicious repository can commit a crafted pnpm-lock.yaml that tricks pnpm into downloading and executing an attacker-chosen pnpm binary instead of fetching a fresh, verified one from the registry.

• highCVE-2026-55487

  CVE-2026-55487: pnpm allowBuilds Build Policy Identity Spoof

  A flaw in how pnpm normalized dependency identifiers let an attacker append a fake peer suffix to a git, tarball, or URL dependency and have it pass as an already-approved build, running arbitrary…

• highCVE-2026-55697

  CVE-2026-55697: pnpm Repository-Controlled configDependencies Native Binary Execution

  A malicious repository can place a specially crafted entry in pnpm-workspace.yaml that causes pnpm to download and execute an attacker-controlled native binary whenever a developer or CI runner runs…

• highCVE-2026-49340

  CVE-2026-49340: gonic Arbitrary File Write via Path Traversal in createPlaylist

  Any authenticated gonic user, including non-admins, can write attacker-controlled content to arbitrary paths on the server's filesystem by passing a path-traversal sequence as a playlist ID.

• high

  CVE-2026-47074: ex_aws_sns SNS Signature Verification Bypass via Unvalidated SigningCertURL

  The ex_aws_sns Elixir library blindly fetches whatever certificate URL an incoming SNS message provides, letting any unauthenticated attacker forge a valid-looking SNS message by pointing that URL…

• highCVE-2026-50016

  CVE-2026-50016: pnpm Transitive Dependency Alias Path Traversal via Symlink Replacement

  A malicious npm registry package can smuggle path traversal segments into a dependency alias, causing pnpm to replace project directories like .git/hooks with symlinks to attacker-controlled code…

• criticalCVE-2026-53519

  CVE-2026-53519: Nezha Monitoring Pre-Auth Path Traversal via /dashboard.. Prefix Confusion

  A missing path-segment check in Nezha Monitoring's dashboard router lets any unauthenticated attacker read arbitrary server-side files, including the JWT signing key, by crafting a URL like…

• high

  Blnk API Key Authorization Bypass in Owner and Scope Enforcement

  A non-master Blnk API key could create keys for other owners or escalate its own permissions by injecting a different owner ID or broader scopes directly into the request body, bypassing all…

• highCVE-2026-49357

  CVE-2026-49357: line-desktop-mcp Unauthenticated MCP Tool Access via Streamable HTTP

  When line-desktop-mcp runs in HTTP mode it binds on all network interfaces with no authentication, letting any reachable host read LINE chat history and send messages as the logged-in desktop user.