CVE-2025-48888
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.
Does this matter?
Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.
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 4.0
- 5.5 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.41% probability · 34th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Affected
- deno/deno
- Source
- security-advisories@github.com
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 Tracking, Patch
- https://github.com/denoland/deno/pull/29213Issue Tracking, Patch
- https://github.com/denoland/deno/security/advisories/GHSA-xqxc-x6p3-w683Exploit, Vendor Advisory
- https://github.com/denoland/deno/security/advisories/GHSA-xqxc-x6p3-w683Exploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.