Possible information disclosure via External Interface

published 2026-05-31 5mo ago modified 2026-07-22 3mo ago also EUVD-2026-33518

cvss: 5.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

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

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 5mo ago (2026-06-01)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Affected products

OTRS AG OTRS

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-269 Improper Privilege Management

References

otrs.com /release-notes/otrs-security-advisory-2026-09/
mitigation, vendor-advisory

Sources

CVE List CVE-2026-48210
NVD CVE-2026-48210

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