CVE-2026-15084: Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal U

Routine

MEDIUM 5.4UPGRADE

CVE-2026-15084 is a medium-severity flaw (CVSS 5.4) affecting ui patterns. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal UI Patterns (SDC in Drupal UI) allows Stored XSS. This issue affects UI Patterns (SDC in Drupal UI) versions: from 2.0.0 to 2.0.17.

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	Low
User interaction	Required
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-07-10
Last modified	2026-10-25

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

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-10 22:16 UTCPublished CVE record published
2026-10-25 15:10 UTCUpdated Record last modified

ademarco ui patterns UPGRADE

Affected: >= 2.0.0 and < 2.0.17

Fixed in: 2.0.17

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy ui-patterns || rpm -q ui-patterns || ui-patterns --version

2. UPGRADE to 2.0.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ui-patterns

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ui-patterns

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 ui-patterns sudo apt install ui-patterns=<VERSION_BEFORE_2.0.0> sudo apt-mark hold ui-patterns

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

dnf --showduplicates list ui-patterns sudo dnf downgrade ui-patterns-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add ui-patterns

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-2026-15084?

ui patterns: upgrade to 2.0.17. Exact commands for each OS are on this page.

Is CVE-2026-15084 being exploited?

CVE-2026-15084 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-2026-15084 affect?

CVE-2026-15084 affects ui patterns. Severity is medium (CVSS 5.4). Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal UI Patterns (SDC in Drupal UI) allows Stored XSS. This issue affects UI Patterns (SDC in Drupal UI) versions: from 2.0.0 to 2.0.17.

How urgent is CVE-2026-15084?

Priority 22/100. No elevated risk signals yet.

Software pages

Drupal vulnerabilities

References

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