CVE-2026-46342: Nuxt is an open-source web development framework for Vue.js

Q: How do I fix CVE-2026-46342?

nuxt: upgrade to 3.21.6, 4.4.5; nuxt\/nitro-server: upgrade to 3.21.6, 4.4.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-46342 being exploited?

CVE-2026-46342 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-46342 affect?

CVE-2026-46342 affects nuxt, nuxt\/nitro-server. Severity is medium (CVSS 5.4). Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.1.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6 and @nuxt/nitro-server versions 3.20.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6, the /__nuxt_is

Q: How urgent is CVE-2026-46342?

Priority 19/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADEUPGRADE

CVE-2026-46342 is a medium-severity flaw (CVSS 5.4) affecting nuxt, nuxt\/nitro-server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.1.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6 and @nuxt/nitro-server versions 3.20.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6, the /__nuxt_island/* endpoint accepts attacker-controlled props query/body parameters and renders any island component without verifying that the URL-resident hash (<Name>_<hashId>.json) was actually issued for those inputs

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 100%)
CISA exploited list	No
Weakness	CWE-79, CWE-349, CWE-444
Published	2026-06-12
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: nuxt

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-12 14:16 UTCPublished CVE record published
2026-06-17 10:53 UTCUpdated Record last modified

nuxt nuxt UPGRADE

Affected: >= 3.1.0 and < 3.21.6 · >= 4.0.0 and < 4.4.5

Fixed in: 3.21.6, 4.4.5

Safe to downgrade to: a release before 3.1.0

1. Check installed version

apt-cache policy nuxt || rpm -q nuxt || nuxt --version

2. UPGRADE to 3.21.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade nuxt

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade nuxt

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.1.0 (Debian / Ubuntu)

apt-cache madison nuxt sudo apt install nuxt=<VERSION_BEFORE_3.1.0> sudo apt-mark hold nuxt

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list nuxt sudo dnf downgrade nuxt-<VERSION_BEFORE_3.1.0> sudo dnf versionlock add nuxt

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

nuxt nuxt\/nitro-server UPGRADE

Affected: >= 3.20.0 and < 3.21.6 · >= 4.2.0 and < 4.4.6

Fixed in: 3.21.6, 4.4.6

Safe to downgrade to: a release before 3.20.0

1. Check installed version

npm ls nuxtnitro-server

2. UPGRADE to 3.21.6

npm install nuxtnitro-server@">=3.21.6"

3. If no update is available yet, DOWNGRADE to a release before 3.20.0

npm view nuxtnitro-server versions npm install nuxtnitro-server@"<3.20.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-46342?

nuxt: upgrade to 3.21.6, 4.4.5; nuxt\/nitro-server: upgrade to 3.21.6, 4.4.6. Exact commands for each OS are on this page.

Is CVE-2026-46342 being exploited?

CVE-2026-46342 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-46342 affect?

CVE-2026-46342 affects nuxt, nuxt\/nitro-server. Severity is medium (CVSS 5.4). Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.1.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6 and @nuxt/nitro-server versions 3.20.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6, the /__nuxt_is

How urgent is CVE-2026-46342?

Priority 19/100. No elevated risk signals yet.

Software pages

Vue.js vulnerabilities

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References

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