Authorization bypass in Next.js



| Updated: 2025-03-25
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-29927
CWE-ID CWE-285
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Next.js
Server applications / Frameworks for developing and running applications

Vendor Zeit

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper authorization

EUVDB-ID: #VU105939

Risk: High

CVSSv4.0: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2025-29927

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to bypass authorization process. 

The vulnerability exists due to missing authorization checks. A remote attacker can bypass authorization mechanism and compromise the affected application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Next.js: 12.0.0 - 15.2.2

CPE2.3 External links

https://github.com/vercel/next.js/security/advisories/GHSA-f82v-jwr5-mffw
https://github.com/vercel/next.js/releases/tag/v13.5.9


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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