In Open Ticket Request System (OTRS) 4.0.x before 4.0.32, 5.0.x before 5.0.30, and 6.0.x…
Priority LOW 23Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
In Open Ticket Request System (OTRS) 4.0.x before 4.0.32, 5.0.x before 5.0.30, and 6.0.x before 6.0.11, an attacker could send a malicious email to an OTRS system. If a logged in user opens it, the email could cause the browser to load external image or CSS resources.
Why it matters now
EPSS 0.01485 74th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:otrs:open_ticket_request_system:*:*:*:*:*:*:*:* | 4.0.0 to before 4.0.32; 5.0.0 to before 5.0.30; 6.0.0 to before 6.0.11 | Vulnerable | OTRS AG |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:a:otrs:open_ticket_request_system:*:*:*:*:*:*:*:* Versions 4.0.0 to before 4.0.32; 5.0.0 to before 5.0.30; 6.0.0 to before 6.0.11 Vulnerable ·OTRS AG
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-16586
- 2026-10-03 Alias added: GHSA-x292-mprx-3fmj
References
Patch 4
- https://community.otrs.com/security-advisory-2018-05-security-update-for-otrs-framework/
- https://github.com/OTRS/otrs/commit/baa92df09145b8ae2702a3a0e85d8ba55ec96302
- https://github.com/OTRS/otrs/commit/a808859a75c59ae3b7568f5cc4708c53462aa4c7
- https://github.com/OTRS/otrs/commit/09e80c7752b0d9080688e4597c7495dd109e0963
Sources
- CVE-2018-16586 · CVE Program
- CVE-2018-16586 · NVD
- FIRST EPSS
- GHSA-x292-mprx-3fmj · GitHub Advisory Database · CC BY 4.0
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