CVE-2019-0542: A remote code execution vulnerability exists in Xterm.js when the component mishandles special characters, aka

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HIGH 8.8WATCHLISTUPGRADEUPGRADE

CVE-2019-0542 is a high-severity flaw (CVSS 8.8) affecting xterm.js, openshift container platform. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A remote code execution vulnerability exists in Xterm.js when the component mishandles special characters, aka "Xterm Remote Code Execution Vulnerability." This affects xterm.js.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Weakness	CWE-94
Published	2019-01-09
Last modified	2026-06-17

Publisher (CNA): Microsoft Corporation · Vendor: redhat · xtermjs

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

Am I affected?

Timeline

2019-01-09 15:29 UTCPublished CVE record published
2026-06-17 02:08 UTCUpdated Record last modified

xtermjs xterm.js UPGRADE

Affected: < 5.0.0

Fixed in: 5.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 5.0.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xterm.js

Note

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

redhat openshift container platform UPGRADE

Affected: >= 3.9 and < 3.9.99 · >= 3.10 and < 3.10.163 · > 3.11 and < 3.11.104

Fixed in: 3.9.99, 3.10.163, 3.11.104

Safe to downgrade to: a release before 3.9

1. Check installed version

apt-cache policy openshift-container-platform || rpm -q openshift-container-platform || openshift-container-platform --version

2. UPGRADE to 3.9.99 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openshift-container-platform

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openshift-container-platform

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 3.9 (Debian / Ubuntu)

apt-cache madison openshift-container-platform sudo apt install openshift-container-platform=<VERSION_BEFORE_3.9> sudo apt-mark hold openshift-container-platform

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

dnf --showduplicates list openshift-container-platform sudo dnf downgrade openshift-container-platform-<VERSION_BEFORE_3.9> sudo dnf versionlock add openshift-container-platform

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-2019-0542?

xterm.js: upgrade to 5.0.0; openshift container platform: upgrade to 3.9.99, 3.10.163, 3.11.104. Exact commands for each OS are on this page.

Is CVE-2019-0542 being exploited?

CVE-2019-0542 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-2019-0542 affect?

CVE-2019-0542 affects xterm.js, openshift container platform. Severity is high (CVSS 8.8). A remote code execution vulnerability exists in Xterm.js when the component mishandles special characters, aka "Xterm Remote Code Execution Vulnerability." This affects xterm.js.

How urgent is CVE-2019-0542?

Priority 58/100. High severity; On your watchlist

Software pages

Red Hat OpenShift vulnerabilities

References

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