Medium severity · published May 31, 2026
CVE-2026-48210
Possible information disclosure via External Interface
5.7
CVSS
0.2%
EPSS
No
On KEV
Description
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OT
OTRS · OTRS AG
2026.3.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48210
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48210
Mitigation
https://otrs.com/release-notes/otrs-security-advisory-2026-09/
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