CVE-2026-0618: Cross-site Scripting vulnerability in Devolutions PowerShell Universal.This issue affects Powershell Universal

Routine

MEDIUM 6.1UPGRADE

CVE-2026-0618 is a medium-severity flaw (CVSS 6.1) affecting powershell universal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site Scripting vulnerability in Devolutions PowerShell Universal.This issue affects Powershell Universal: before 4.5.6, before 5.6.13.

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 92%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-01-07
Last modified	2026-10-26

Publisher (CNA): Devolutions Inc. · Vendor: ironmansoftware

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-07 17:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

ironmansoftware powershell universal UPGRADE

Affected: < 4.5.6 · >= 5.0.0 and < 5.6.13

Fixed in: 4.5.6, 5.6.13

Safe to downgrade to: a release before 5.0.0

1. Check installed version

apt-cache policy powershell-universal || rpm -q powershell-universal || powershell-universal --version

2. UPGRADE to 4.5.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade powershell-universal

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade powershell-universal

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 5.0.0 (Debian / Ubuntu)

apt-cache madison powershell-universal sudo apt install powershell-universal=<VERSION_BEFORE_5.0.0> sudo apt-mark hold powershell-universal

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

dnf --showduplicates list powershell-universal sudo dnf downgrade powershell-universal-<VERSION_BEFORE_5.0.0> sudo dnf versionlock add powershell-universal

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-2026-0618?

powershell universal: upgrade to 4.5.6, 5.6.13. Exact commands for each OS are on this page.

Is CVE-2026-0618 being exploited?

CVE-2026-0618 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-2026-0618 affect?

CVE-2026-0618 affects powershell universal. Severity is medium (CVSS 6.1). Cross-site Scripting vulnerability in Devolutions PowerShell Universal.This issue affects Powershell Universal: before 4.5.6, before 5.6.13.

How urgent is CVE-2026-0618?

Priority 23/100. No elevated risk signals yet.

Software pages

PowerShell vulnerabilities

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References

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