MediumCVE-2026-56326

Nuxt - Server-Side Open Redirect via Path-Normalization Bypass in navigateTo (CVE-2026-56326)

Published 22.06.2026Last modified 25.10.2026Sources: OSV, CVE.org

What is affected, what to do

Nuxt versions 4.0.0 before 4.4.7 and 3.x before 3.21.7 contain a server-side open redirect vulnerability in navigateTo that fails to properly validate path-normalized payloads like /..//evil.com and /.//evil.com. Attackers can bypass external-host checks using path-normalization techniques to redirect users to attacker-controlled sites via the Location header or meta-refresh, enabling phishing and OAuth authorization-code theft.

Update Nuxt to version 4.4.7, Nuxt to version 3.21.7.

Affected: Nuxt lt 4.0.0..4.4.7
Nuxt lt *..3.21.7
Fixed in: Nuxt 4.4.7
Nuxt 3.21.7

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Metrics

6.1

Priority

XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

Source: NVD, CVSS v3

6.1

CVSS v3

Severity Medium on the scale from 0 to 10.

Source: OSV, CVE.org

0.4 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 29.9

Show all metrics

Severity: Medium
Priority (0–325) The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first? Read in glossary: 57.01 Methodology
Exploit maturity An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack. Read in glossary: no public PoC known
XIEM Effective CVSS XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command. Read in glossary: 6.1 Methodology
CVSS v3 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 6.1
CVSS v4 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 5.3
EPSS score The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“. Read in glossary: 0.4 %; Low — model estimates < 1% exploitation likelihood.
EPSS percentile The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking. Read in glossary: 29.9; Elevated — this CVE ranks above at least 10% of all CVEs scored today.
KEV status The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching. Read in glossary: —
Published: 22.06.2026
CISA assessment (SSVC): Exploitation: none known · not automatable · Technical impact: partial; Source: CISA Vulnrichment, as of 23 June 2026
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-601

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2 NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management. Read in glossary: Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
CRA The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates. Read in glossary: From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001 ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security. Read in glossary: Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

Source: OSV (Open Source Vulnerabilities), cvelistv5, NVD (NIST), CVE.org (MITRE)

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

Affected products
		Affected versions	Fixed in
Nuxt	Nuxt	`4.0.0 – < 4.4.7` `< 3.21.7`	`4.4.7` `3.21.7`
nuxt	nuxt	`3.0.0 – < 3.21.7` `4.0.0 – < 4.4.7`	`3.21.7` `4.4.7`
npm	nuxt	`4.0.0` `3.5.0`	— —

Vendors and products

Nuxt Nuxt

Weakness classes (CWE)

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
Base
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.
Entry at MITRE CWE-601

References & sources

github.comCVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56698.j…advisory
github.comGitHub Security Advisory (GHSA-c9cv-mq2m-ppp3)advisory, Vendor advisory, Third-party advisory
NVD (NIST)vuln/detail/CVE-2026-56698advisory
vulncheck.comadvisories/nuxt-cross-site-scripting-via-navigateto-open-optionadvisory
github.comnuxt/nuxt/commit/3394716d4a913cba904b028df5338f2aead50032fix
github.comnuxt/nuxt/commit/62fc32eddf648b00a3890141e0235d2a222b024dfix
github.comCVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56697.j…advisory
NVD (NIST)vuln/detail/CVE-2026-56697advisory
vulncheck.comadvisories/nuxt-open-redirect-via-protocol-relative-paths-in-re…advisory
github.comnuxt/nuxt/commit/6497d99dd106254abd089f6a263d7773869a343bfix
github.comnuxt/nuxt/commit/e447a793c47766834f7497f8412a76cd56fd8ee1fix
NVD (NIST)vuln/detail/CVE-2026-56326advisory
github.comnuxt/nuxt/pull/35115web
github.comnuxt/nuxt/pull/35206web
github.comnuxt/nuxt/commit/1f2dd5e78c77576437138e97671965573c232835web, Patch, Patch
github.comnuxt/nuxt/commit/2cce6fb02e621196d56df92e05594e07469b5a6dweb, Patch, Patch
github.comnuxt/nuxtpackage
vulncheck.comVulnCheck Advisory: Nuxt - Server-Side Open Redirect via Path-Normalization Bypass in navigateToweb, Third-party advisory, Third-party advisory

Changes to this CVE

Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

25.06.2026Initial analysis by NVDNVD

Newly listed as affected:

Nuxt (4.0.0 – before 4.4.7; 3.0.0 – before 3.21.7)

New references:

Show 5 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Product configuration	added	—	OR cpe:2.3:a:nuxt:nuxt::::::::* versions from (including) 4.0.0 up to (excluding) 4.4.7 cpe:2.3:a:nuxt:nuxt::::::::* versions from (including) 3.0.0 up to (excluding) 3.21.7
Reference type	added	—	VulnCheck: https://github.com/nuxt/nuxt/commit/1f2dd5e78c77576437138e97671965573c232835 Types: Patch
Reference type	added	—	VulnCheck: https://github.com/nuxt/nuxt/commit/2cce6fb02e621196d56df92e05594e07469b5a6d Types: Patch
Reference type	added	—	VulnCheck: https://github.com/nuxt/nuxt/security/advisories/GHSA-c9cv-mq2m-ppp3 Types: Third Party Advisory
Reference type	added	—	VulnCheck: https://www.vulncheck.com/advisories/nuxt-server-side-open-redirect-via-path-normalization-bypass-in-navigateto Types: Third Party Advisory

Source identifier: nvd@nist.gov

22.06.2026ReceivedVulnCheck

CVSS V4.0: AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS V3.1: AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness type: CWE-601

Description added or changed

New references:

Show 9 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Nuxt, Nuxt
Description	added	—	Nuxt versions 4.0.0 before 4.4.7 and 3.x before 3.21.7 contain a server-side open redirect vulnerability in navigateTo that fails to properly validate path-normalized payloads like /..//evil.com and /.//evil.com. Attackers can bypass external-host checks using path-normalization techniques to redirect users to attacker-controlled sites via the Location header or meta-refresh, enabling phishing and OAuth authorization-code theft.
CVSS	added	—	AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS	added	—	AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness type (CWE)	added	—	CWE-601
Reference	added	—	https://github.com/nuxt/nuxt/commit/1f2dd5e78c77576437138e97671965573c232835
Reference	added	—	https://github.com/nuxt/nuxt/commit/2cce6fb02e621196d56df92e05594e07469b5a6d
Reference	added	—	https://github.com/nuxt/nuxt/security/advisories/GHSA-c9cv-mq2m-ppp3
Reference	added	—	https://www.vulncheck.com/advisories/nuxt-server-side-open-redirect-via-path-normalization-bypass-in-navigateto

Source identifier: disclosure@vulncheck.com

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<a href="https://intel.neosec.eu/en/cve/CVE-2026-56326"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-56326.svg?lang=en" alt="CVE-2026-56326 – NEOSEC Intel" height="20"></a>