CVE-2019-1010018: Zammad GmbH Zammad 2.3.0 and earlier is affected by: Cross Site Scripting (XSS) - CWE-80

Routine

MEDIUM 6.1UPGRADE

CVE-2019-1010018 is a medium-severity flaw (CVSS 6.1) affecting zammad. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Zammad GmbH Zammad 2.3.0 and earlier is affected by: Cross Site Scripting (XSS) - CWE-80. The impact is: Execute java script code on users browser. The component is: web app. The attack vector is: the victim must open a ticket. The fixed version is: 2.3.1, 2.2.2 and 2.1.3.

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	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-80, CWE-79
Published	2019-07-16
Last modified	2026-06-17

Publisher (CNA): DWF · Vendor: zammad

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

Am I affected?

Timeline

2019-07-16 13:15 UTCPublished CVE record published
2026-06-17 02:09 UTCUpdated Record last modified

zammad zammad UPGRADE

Affected: >= 2.1.0 and <= 2.1.2 · >= 2.2.0 and <= 2.2.1 · 2.3.0

Fixed in: newer than 2.2.1

Safe to downgrade to: a release before 2.1.0

1. Check installed version

apt-cache policy zammad || rpm -q zammad || zammad --version

2. UPGRADE to newer than 2.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade zammad

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade zammad

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 2.1.0 (Debian / Ubuntu)

apt-cache madison zammad sudo apt install zammad=<VERSION_BEFORE_2.1.0> sudo apt-mark hold zammad

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

dnf --showduplicates list zammad sudo dnf downgrade zammad-<VERSION_BEFORE_2.1.0> sudo dnf versionlock add zammad

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-2019-1010018?

zammad: upgrade to newer than 2.2.1. Exact commands for each OS are on this page.

Is CVE-2019-1010018 being exploited?

CVE-2019-1010018 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-2019-1010018 affect?

CVE-2019-1010018 affects zammad. Severity is medium (CVSS 6.1). Zammad GmbH Zammad 2.3.0 and earlier is affected by: Cross Site Scripting (XSS) - CWE-80. The impact is: Execute java script code on users browser. The component is: web app. The attack vector is: the victim must open a ticket. The fixed ve

How urgent is CVE-2019-1010018?

Priority 39/100. No elevated risk signals yet.

Software pages

Java vulnerabilities

Related CVEs

CVE-2026-102489 CRITICAL 9.8 EXPLOITED UPGRADE Zammad GmbH Zammad Session Fixation Vulnerability
CVE-2026-102490 HIGH 7.8 EXPLOITED UPGRADE Zammad GmbH Zammad Improper Privilege Management Vulnerability
CVE-2024-33668 CRITICAL 9.1 UPGRADE An issue was discovered in Zammad before 6.3.0
CVE-2026-34723 HIGH 7.5 UPGRADE Zammad is a web based open source helpdesk/customer support system
CVE-2026-34724 HIGH 7.2 DOWNGRADE Zammad is a web based open source helpdesk/customer support system

References

← Back to latest CVEs