CVE-2026-48210: An improper default configuration in OTRS 2026.3.1 causes ticket article forwarding actions to enforce the “Is

Routine

MEDIUM 5.7DOWNGRADE

CVE-2026-48210 is a medium-severity flaw (CVSS 5.7) affecting otrs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An improper default configuration in OTRS 2026.3.1 causes ticket article forwarding actions to enforce the “Is visible for customer” flag by default and prevent users from disabling it via the UI. This leads to unintended exposure of internal ticket information to the External Frontend This issue affects OTRS 2026.3.1

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-200, CWE-269
Published	2026-05-31
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

2026-05-31 22:16 UTCPublished CVE record published
2026-07-22 07:10 UTCUpdated Record last modified

otrs otrs DOWNGRADE

Affected: 2026.3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2026.3.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2026.3.1 (Debian / Ubuntu)

apt-cache madison otrs sudo apt install otrs=<VERSION_BEFORE_2026.3.1> sudo apt-mark hold otrs

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list otrs sudo dnf downgrade otrs-<VERSION_BEFORE_2026.3.1> 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-2026-48210?

otrs: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-48210 being exploited?

CVE-2026-48210 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-2026-48210 affect?

CVE-2026-48210 affects otrs. Severity is medium (CVSS 5.7). An improper default configuration in OTRS 2026.3.1 causes ticket article forwarding actions to enforce the “Is visible for customer” flag by default and prevent users from disabling it via the UI. This leads to unintended exposure of intern

How urgent is CVE-2026-48210?

Priority 24/100. No elevated risk signals yet.

Related CVEs

CVE-2026-48188 CRITICAL 9.1 UPGRADE An improper Input Validation vulnerability in OTRS or ((OTRS)) Community Edition database layer module allows
CVE-2026-48208 MEDIUM 6.5 UPGRADE An improper neutralization of active SVG content in OTRS or ((OTRS)) Community Edition ticket article renderin
CVE-2026-48209 HIGH 7.1 UPGRADE An improper neutralization of user-controllable input in OTRS or ((OTRS)) Community Edition ticket handling al
CVE-2026-48187 MEDIUM 5.7 UPGRADE An uncontrolled allocation of resources without limits or throttling in the e-mail handling in OTRS allows exc
CVE-2026-48189 MEDIUM 5.7 UPGRADE An improper Input Validation vulnerability in OTRS Customer Backend module allows to access customer informati

References

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