CVE-2018-16586
CVE-2018-16586 is a medium-severity vulnerability in Otrs Open Ticket Request System with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 4.3)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (71st percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Otrs Open Ticket Request System
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2018-16586?
- 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.
- How severe is CVE-2018-16586?
- CVE-2018-16586 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
- Is CVE-2018-16586 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-16586?
- CVE-2018-16586 primarily affects Otrs Open Ticket Request System. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-16586?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-16586 published?
- CVE-2018-16586 was published on 2018-09-28 and last updated on 2026-06-17.
References
- https://community.otrs.com/security-advisory-2018-05-security-update-for-otrs-framework/
- https://github.com/OTRS/otrs/commit/09e80c7752b0d9080688e4597c7495dd109e0963
- https://github.com/OTRS/otrs/commit/a808859a75c59ae3b7568f5cc4708c53462aa4c7
- https://github.com/OTRS/otrs/commit/baa92df09145b8ae2702a3a0e85d8ba55ec96302
- https://lists.debian.org/debian-lts-announce/2018/09/msg00033.html
- https://www.debian.org/security/2018/dsa-4317
Affected products (3)
- cpe:2.3:a:otrs:open_ticket_request_system:*:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
More vulnerabilities in Otrs Open Ticket Request System
- CVE-2018-14593 — High (CVSS 8.8): An issue was discovered in Open Ticket Request System (OTRS) 6.0.x through 6.0.9, 5.0.x through 5.0.28, and 4.0.x…
- CVE-2018-19143 — Medium (CVSS 6.5): Open Ticket Request System (OTRS) 4.0.x before 4.0.33, 5.0.x before 5.0.31, and 6.0.x before 6.0.13 allows an…
- CVE-2018-16587 — Medium (CVSS 6.5): 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…
- CVE-2018-19142 — Medium (CVSS 4.8): Open Ticket Request System (OTRS) 6.0.x before 6.0.13 allows an admin to conduct an XSS attack via a modified URL.
- CVE-2018-19141 — Medium (CVSS 4.8): Open Ticket Request System (OTRS) 4.0.x before 4.0.33 and 5.0.x before 5.0.31 allows an admin to conduct an XSS attack…