CVE-2026-48209: An improper neutralization of user-controllable input in OTRS or ((OTRS)) Community Edition ticket handling al

Routine

HIGH 7.1UPGRADE

CVE-2026-48209 is a high-severity flaw (CVSS 7.1) affecting otrs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An improper neutralization of user-controllable input in OTRS or ((OTRS)) Community Edition ticket handling allows authenticated attackers to perform reflected cross-site scripting (XSS) attacks via crafted request parameters associated with ticket actions. By injecting malicious JavaScript into manipulated request URLs, attackers can execute arbitrary script code in the context of an authenticated agent session when the crafted link is opened.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 88%)
CISA exploited list	No
Weakness	CWE-79, CWE-116
Published	2026-06-01
Last modified	2026-07-22

Publisher (CNA): OTRS AG · Vendor: otrs

Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-01 04:16 UTCPublished CVE record published
2026-07-22 07:10 UTCUpdated Record last modified

otrs otrs UPGRADE

Affected: <= 6.0.32 · >= 7.0.0 and <= 7.0.49

Fixed in: newer than 7.0.49

Safe to downgrade to: a release before 7.0.0

1. Check installed version

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

2. UPGRADE to newer than 7.0.49 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade otrs

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 7.0.0 (Debian / Ubuntu)

apt-cache madison otrs sudo apt install otrs=<VERSION_BEFORE_7.0.0> sudo apt-mark hold otrs

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

dnf --showduplicates list otrs sudo dnf downgrade otrs-<VERSION_BEFORE_7.0.0> sudo dnf versionlock add otrs

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-2026-48209?

otrs: upgrade to newer than 7.0.49. Exact commands for each OS are on this page.

Is CVE-2026-48209 being exploited?

CVE-2026-48209 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-2026-48209 affect?

CVE-2026-48209 affects otrs. Severity is high (CVSS 7.1). An improper neutralization of user-controllable input in OTRS or ((OTRS)) Community Edition ticket handling allows authenticated attackers to perform reflected cross-site scripting (XSS) attacks via crafted request parameters associated wit

How urgent is CVE-2026-48209?

Priority 28/100. High severity

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References

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