CVE-2025-13984: Permissive Cross-domain Security Policy with Untrusted Domains vulnerability in Drupal Next.Js allows Cross-Si

Routine

MEDIUM 6.1UPGRADE

CVE-2025-13984 is a medium-severity flaw (CVSS 6.1) affecting next.js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Permissive Cross-domain Security Policy with Untrusted Domains vulnerability in Drupal Next.Js allows Cross-Site Scripting (XSS).This issue affects Next.Js: from 0.0.0 before 1.6.4, from 2.0.0 before 2.0.1.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-942
Published	2026-01-28
Last modified	2026-06-17

Publisher (CNA): Drupal.org · Vendor: kanopi

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

Am I affected?

Timeline

2026-01-28 20:16 UTCPublished CVE record published
2026-06-17 08:35 UTCUpdated Record last modified

kanopi next.js UPGRADE

Affected: < 1.6.4 · >= 2.0.0 and < 2.0.1

Fixed in: 1.6.4, 2.0.1

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy next.js || rpm -q next.js || next.js --version

2. UPGRADE to 1.6.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade next.js

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade next.js

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 2.0.0 (Debian / Ubuntu)

apt-cache madison next.js sudo apt install next.js=<VERSION_BEFORE_2.0.0> sudo apt-mark hold next.js

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

dnf --showduplicates list next.js sudo dnf downgrade next.js-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add next.js

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-2025-13984?

next.js: upgrade to 1.6.4, 2.0.1. Exact commands for each OS are on this page.

Is CVE-2025-13984 being exploited?

CVE-2025-13984 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-2025-13984 affect?

CVE-2025-13984 affects next.js. Severity is medium (CVSS 6.1). Permissive Cross-domain Security Policy with Untrusted Domains vulnerability in Drupal Next.Js allows Cross-Site Scripting (XSS).This issue affects Next.Js: from 0.0.0 before 1.6.4, from 2.0.0 before 2.0.1.

How urgent is CVE-2025-13984?

Priority 23/100. No elevated risk signals yet.

Software pages

Drupal vulnerabilities · Next.js vulnerabilities

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References

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