Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Deno | Deno | >= 1.41.3, < 2.1.13 |
Related Weaknesses (CWE)
References
- https://github.com/denoland/deno/commit/2f0fae9d9071dcaf0a689bc7097584b1b9ebc8dbPatch
- https://github.com/denoland/deno/commit/9d665572d3cd39f997e29e6daac7c1102fc5c04fPatch
- https://github.com/denoland/deno/commit/ef315b56c26c9ef5f25284a5100d2ed525a148cfPatch
- https://github.com/denoland/deno/pull/22894Issue TrackingPatch
- https://github.com/denoland/deno/pull/29213Issue TrackingPatch
- https://github.com/denoland/deno/security/advisories/GHSA-xqxc-x6p3-w683ExploitVendor Advisory
- https://github.com/denoland/deno/security/advisories/GHSA-xqxc-x6p3-w683ExploitVendor Advisory
FAQ
What is CVE-2025-48888?
CVE-2025-48888 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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, e...
How severe is CVE-2025-48888?
CVE-2025-48888 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-48888?
Check the references section above for vendor advisories and patch information. Affected products include: Deno Deno.