TI-2026-32492 Aliases CVE-2026-44580 GHSA-gx5p-jg67-6x7h

Next.js: Cross-site scripting in beforeInteractive scripts with untrusted input

LOW 27CWE-79Published 2026-05-13 · Updated 2026-05-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Partial Red Hat: 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-79.

Summary

Next.js is a React framework for building full-stack web applications. From 13.0.0 to before 15.5.16 and 16.2.5, applications that use beforeInteractive scripts together with untrusted content can be vulnerable to cross-site scripting. In affected versions, serialized script content was not escaped safely before being embedded into the document, which could allow attacker-controlled input to break out of the intended script context and execute arbitrary JavaScript in a visitor's browser. This vulnerability is fixed in 15.5.16 and 16.2.5.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00205 10th percentileScored 2026-11-07

Fix Partial next.js (vercel): 15.5.16, 16.2.5next (npm): 15.5.16, 16.2.5Red Hat: 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
vercel	next.js	13.0.0 to before 15.5.16; 16.0.0 to before 16.2.5	15.5.16, 16.2.5	Patch available	CNA
—	next (npm)	13.0.0 to before 15.5.16	15.5.16	Patch available	GHSA-gx5p-jg67-6x7h
—	next (npm)	16.0.0 to before 16.2.5	16.2.5	Patch available	GHSA-gx5p-jg67-6x7h

next.js Vendorvercel Affected 13.0.0 to before 15.5.16; 16.0.0 to before 16.2.5 Fixed in 15.5.16, 16.2.5 Patch available CNA
next (npm) Vendor— Affected 13.0.0 to before 15.5.16 Fixed in 15.5.16 Patch available GHSA-gx5p-jg67-6x7h
next (npm) Vendor— Affected 16.0.0 to before 16.2.5 Fixed in 16.2.5 Patch available GHSA-gx5p-jg67-6x7h

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:vercel:next.js::::::node.js::*	13.0.0 to before 15.5.16; 16.0.0 to before 16.2.5	Vulnerable	vercel

cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* Versions 13.0.0 to before 15.5.16; 16.0.0 to before 16.2.5 Vulnerable ·vercel

Remediation

Fix · CNA next.js (vercel) Fixed in 15.5.16, 16.2.5
Fix · GHSA-gx5p-jg67-6x7h next (npm) Fixed in 15.5.16 Advisory →
Fix · GHSA-gx5p-jg67-6x7h next (npm) Fixed in 16.2.5 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux AI (RHEL AI) 3	Affected	No fix yet: Fix deferred
Red Hat Trusted Artifact Signer	Affected	No fix yet: Fix deferred
streams for Apache Kafka 3	Affected	No fix yet: Fix deferred

Not affected: 4 products

Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat Hardened Images

Timeline

2026-10-02 Threatist record created from CVE-2026-44580
2026-10-03 Alias added: GHSA-gx5p-jg67-6x7h

References

Advisory 2

Other 3

TI-2025-34861 Deserialization of untrusted data in Meta react-server-dom-webpack KEVCVSS 3.1CRITICAL 10.0
TI-2025-21309 Authorization Bypass in Next.js Middleware CVSS 3.1CRITICAL 9.1
TI-2025-34863 Deserialization of untrusted data in Meta react-server-dom-webpack CVSS 3.1HIGH 7.5
TI-2024-31371 Cache Poisoning in next.js CVSS 3.1HIGH 7.5
TI-2023-24914 Next.js before 13.4.20-canary.13 lacks a cache-control header and thus empty prefetch… CVSS 3.1HIGH 7.5
TI-2026-32490 Next.js: Server-side request forgery in applications using WebSocket upgrades CVSS 3.1HIGH 8.6

See all 62 →

Sources

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