CVE-2025-48888

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

Severity Score

5.5

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

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.

Deno es un entorno de ejecución de JavaScript, TypeScript y WebAssembly. A partir de la versión 1.41.3 y anteriores a las versiones 2.1.13, 2.2.13 y 2.3.2, `deno run --allow-read --deny-read main.ts` da como resultado "permitido", aunque `deny' debería ser más seguro. El resultado es el mismo con todos los permisos unarios globales asignados como `--allow-* --deny-*`. Esto solo afecta a una combinación de indicadores sin sentido, por lo que no debería tener un impacto real en la base de usuarios. Los usuarios pueden actualizar a las versiones 2.1.13, 2.2.13 o 2.3.2 para recibir un parche.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

None

Integrity

Low

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

Poc

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2025-05-27 CVE Reserved
2025-06-04 CVE Published
2025-06-04 CVE Updated
2025-07-16 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-863: Incorrect Authorization

CAPEC

References (6)

URL	Tag	Source
https://github.com/denoland/deno/commit/2f0fae9d9071dcaf0a689bc7097584b1b9ebc8db	X_refsource_misc
https://github.com/denoland/deno/commit/9d665572d3cd39f997e29e6daac7c1102fc5c04f	X_refsource_misc
https://github.com/denoland/deno/commit/ef315b56c26c9ef5f25284a5100d2ed525a148cf	X_refsource_misc
https://github.com/denoland/deno/pull/22894	X_refsource_misc
https://github.com/denoland/deno/pull/29213	X_refsource_misc
https://github.com/denoland/deno/security/advisories/GHSA-xqxc-x6p3-w683	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Denoland Search vendor "Denoland"		Deno Search vendor "Denoland" for product "Deno"				>= 1.41.3 < 2.1.13 Search vendor "Denoland" for product "Deno" and version " >= 1.41.3 < 2.1.13"		en		Affected
Denoland Search vendor "Denoland"		Deno Search vendor "Denoland" for product "Deno"				>= 2.2.0 < 2.2.13 Search vendor "Denoland" for product "Deno" and version " >= 2.2.0 < 2.2.13"		en		Affected
Denoland Search vendor "Denoland"		Deno Search vendor "Denoland" for product "Deno"				>= 2.3.0 < 2.3.2 Search vendor "Denoland" for product "Deno" and version " >= 2.3.0 < 2.3.2"		en		Affected