Open Ticket Request System (OTRS) before 2.3.6 does not properly handle e-mail messages in which the From line contains UTF-8 characters associated with diacritical marks and an invalid charset, which allows remote attackers to cause a denial of service (duplicate tickets and duplicate auto-responses) by sending a crafted message to a POP3 mailbox
Published Mar 18, 2011
5.0
MEDIUMCVSS 2.0
EPSS 1.69%
Description
Open Ticket Request System (OTRS) before 2.3.6 does not properly handle e-mail messages in which the From line contains UTF-8 characters associated with diacritical marks and an invalid charset, which allows remote attackers to cause a denial of service (duplicate tickets and duplicate auto-responses) by sending a crafted message to a POP3 mailbox.
Affected products
No data.
- ≤ 2.3.5
- 0.5
- 0.5
- 0.5
- 0.5
- 0.5
- 0.5
- 0.5
- 0.5
- 1.0
- 1.0
- 1.0
- 1.0.0
- 1.0.1
- 1.0.2
- 1.1
- 1.1.0
- 1.1.0
- 1.1.1
- 1.1.2
- 1.1.3
- 1.1.4
- 1.2.0
- 1.2.0
- 1.2.0
- 1.2.1
- 1.2.2
- 1.2.3
- 1.2.4
- 1.3.0
- 1.3.0
- 1.3.0
- 1.3.0
- 1.3.1
- 1.3.2
- 1.3.3
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.1.0
- 2.1.0
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.1.5
- 2.1.6
- 2.1.7
- 2.1.8
- 2.1.9
- 2.2.0
- 2.2.0
- 2.2.0
- 2.2.0
- 2.2.0
- 2.2.1
- 2.2.2
- 2.2.3
- 2.2.4
- 2.2.5
- 2.2.6
- 2.2.7
- 2.2.8
- 2.2.9
- 2.3.0
- 2.3.0
- 2.3.0
- 2.3.0
- 2.3.0
- 2.3.1
- 2.3.2
- 2.3.3
- 2.3.4
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.69% (0.01694) | 76.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.69% (0.01694) | 74.06th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.47% (0.00474) | 62.69th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.33% (0.00325) | 71.66th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.22% (0.00220) | 59.71th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.20% (0.00203) | 57.56th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.18% (0.00184) | 54.52th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.33% (0.00325) | 66.12th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
References (2)
- http://bugs.otrs.org/show_bug.cgi?id=3426 x_refsource_CONFIRM
- http://source.otrs.org/viewvc.cgi/otrs/CHANGES?revision=1.1807 x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| http://bugs.otrs.org/show_bug.cgi?id=3426 | x_refsource_CONFIRM | |
| http://source.otrs.org/viewvc.cgi/otrs/CHANGES?revision=1.1807 | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.