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CVE-2025-48888GHSA-XQXC-X6P3-W683

Deno run with --allow-read and --deny-read flags results in allowed

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2.1.13, 2.2.13, 2.3.2, 0.212.0
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: yes
  • Technical impact: partial

Summary

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Starting in version 1.41.3 and prior to versions 2.1.13, 2.2.13, and 2.3.2, `deno run --allow-read --deny-read main.ts` results in allowed, even though 'deny' should be stronger. The result is the same with all global unary permissions given as `--allow-* --deny-*`. This only affects a nonsensical combination of flags, so there shouldn't be a real impact on the userbase. Users may upgrade to version 2.1.13, 2.2.13, or 2.3.2 to receive a patch.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • denoland deno

    From 1.41.3 · fixed in 2.1.13; From 2.2.0 · fixed in 2.2.13; From 2.3.0 · fixed in 2.3.2

  • denocrates.io

    From 1.41.3 · fixed in 2.1.13

  • denocrates.io

    From 2.2.0 · fixed in 2.2.13

  • denocrates.io

    From 2.3.0 · fixed in 2.3.2

  • deno_runtimecrates.io

    From 0.150.0 · fixed in 0.212.0

References 6

GitHub · denoland/deno