PT-2025-35326 · Vercel · Next.Js

Kristianmagas · Published 2025-08-29 · Updated 2025-09-02 · CVE-2025-55173

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Next.js versions prior to 14.2.31 Next.js versions 15.0.0 through 15.4.5

Description Next.js Image Optimization is susceptible to content injection. Attackers controlling external image sources can trigger file downloads with arbitrary content and filenames under specific configurations. This could be exploited for phishing or malicious file delivery.

Recommendations Upgrade to Next.js version 14.2.31 or later. Upgrade to Next.js version 15.4.5 or later. Verify that external image sources are strictly validated.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2025-55173

GHSA-XV57-4MR9-WG8V

Affected Products

Next.Js

References · 15

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55173.json · Exploit
• https://github.com/vercel/next.js/security/advisories/GHSA-xv57-4mr9-wg8v · Vendor Advisory
• https://github.com/vercel/next.js/commit/6b12c60c61ee80cb0443ccd20de82ca9b4422ddd · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-55173 · Security Note
• https://osv.dev/vulnerability/GHSA-xv57-4mr9-wg8v · Vendor Advisory
• https://vercel.com/changelog/cve-2025-55173 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-55173 · Vendor Advisory
• https://github.com/vercel/next.js · Note
• https://community.vercel.com/t/news-cache-2025-09-01/21512?u=amyegan · Reddit Post
• https://twitter.com/Cloudforce_One/status/1961551405116002497 · Twitter Post
• https://twitter.com/CVEnew/status/1961553068794757500 · Twitter Post
• https://twitter.com/CFchangelog/status/1962282000208814289 · Twitter Post
• https://t.me/CVEtracker/31291 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1961638431001366864 · Twitter Post
• http://vercel.com/changelog/cve-2025-55173 · Note