CVE-2025-55173

Name: CVE-2025-55173
Creator: NVD / NIST
Published: 2025-08-29T22:15:31.75+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2025-55173 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Next.js is a React framework for building full-stack web applications. In versions before 14.2.31 and from 15.0.0 to before 15.4.5, Next.js Image Optimization is vulnerable to content injection. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

Next.js is a React framework for building full-stack web applications. In versions before 14.2.31 and from 15.0.0 to before 15.4.5, Next.js Image Optimization is vulnerable to content injection. The issue allowed attacker-controlled external image sources to trigger file downloads with arbitrary content and filenames under specific configurations. This behavior could be abused for phishing or malicious file delivery. This vulnerability has been fixed in Next.js versions 14.2.31 and 15.4.5.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS Probability

0.51%

39.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Vercel	Next.Js	< 14.2.31
Vercel	Next.Js	>= 15.0.0, < 15.4.5

References

https://github.com/vercel/next.js/commit/6b12c60c61ee80cb0443ccd20de82ca9b4422dddPatch
https://github.com/vercel/next.js/security/advisories/GHSA-xv57-4mr9-wg8vVendor Advisory
https://vercel.com/changelog/cve-2025-55173Vendor Advisory

Timeline

Published: Aug 29, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-55173?

How severe is CVE-2025-55173?

CVE-2025-55173 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2025-55173?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-55173?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST