deno up to 2.1.12/2.2.12/2.3.1 authorization

Summaryinfo

A vulnerability was found in deno up to 2.1.12/2.2.12/2.3.1. It has been rated as problematic. This impacts an unknown function. Performing a manipulation results in authorization. This vulnerability is cataloged as CVE-2025-48888. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in deno up to 2.1.12/2.2.12/2.3.1. It has been classified as problematic. This affects an unknown function. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. This is going to have an impact on integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2025-48888 since 05/27/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but an exploit is available.

It is declared as proof-of-concept.

Upgrading to version 2.1.13, 2.2.13 or 2.3.2 eliminates this vulnerability.

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Productinfo

Name

• deno

Version

• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3
• 2.1.4
• 2.1.5
• 2.1.6
• 2.1.7
• 2.1.8
• 2.1.9
• 2.1.10
• 2.1.11
• 2.1.12
• 2.2.0
• 2.2.1
• 2.2.2
• 2.2.3
• 2.2.4
• 2.2.5
• 2.2.6
• 2.2.7
• 2.2.8
• 2.2.9
• 2.2.10
• 2.2.11
• 2.2.12
• 2.3.0
• 2.3.1

CPE 2.3info

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CPE 2.2info

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