CVE-2018-8046: The getTip() method of Action Columns of Sencha Ext JS 4 to 6 before 6.6.0 is vulnerable to XSS attacks, even

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MEDIUM 6.1UPGRADE

CVE-2018-8046 is a medium-severity flaw (CVSS 6.1) affecting ext js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The getTip() method of Action Columns of Sencha Ext JS 4 to 6 before 6.6.0 is vulnerable to XSS attacks, even when passed HTML-escaped data. This framework brings no built-in XSS protection, so the developer has to ensure that data is correctly sanitized. However, the getTip() method of Action Columns takes HTML-escaped data and un-escapes it. If the tooltip contains user-controlled data, an attacker could exploit this to create a cross-site scri

Why this priority

EPSS top 1%: very likely to be exploited

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	66.6% (top 1%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-07-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: sencha

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

Am I affected?

Timeline

2018-07-05 20:29 UTCPublished CVE record published
2026-06-17 02:04 UTCUpdated Record last modified

sencha ext js UPGRADE

Affected: >= 4.0.0 and < 6.6.0

Fixed in: 6.6.0

Safe to downgrade to: a release before 4.0.0

1. Check installed version

apt-cache policy ext-js || rpm -q ext-js || ext-js --version

2. UPGRADE to 6.6.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ext-js

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ext-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 4.0.0 (Debian / Ubuntu)

apt-cache madison ext-js sudo apt install ext-js=<VERSION_BEFORE_4.0.0> sudo apt-mark hold ext-js

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

dnf --showduplicates list ext-js sudo dnf downgrade ext-js-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add ext-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-2018-8046?

ext js: upgrade to 6.6.0. Exact commands for each OS are on this page.

Is CVE-2018-8046 being exploited?

CVE-2018-8046 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-2018-8046 affect?

CVE-2018-8046 affects ext js. Severity is medium (CVSS 6.1). The getTip() method of Action Columns of Sencha Ext JS 4 to 6 before 6.6.0 is vulnerable to XSS attacks, even when passed HTML-escaped data. This framework brings no built-in XSS protection, so the developer has to ensure that data is corre

How urgent is CVE-2018-8046?

Priority 46/100. EPSS top 1%: very likely to be exploited

Related CVEs

CVE-2007-6758 HIGH 7.5 DOWNGRADE Server-side request forgery (SSRF) vulnerability in feed-proxy.php in extjs 5.0.0.

References

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