An issue was discovered in inc/class_feedgeneration.php in MyBB 1.8.17
Published Aug 28, 2018
6.1
MEDIUMCVSS 3.0
EPSS 2.26%
Description
An issue was discovered in inc/class_feedgeneration.php in MyBB 1.8.17. On the forum RSS Syndication page, one can generate a URL such as http://localhost/syndication.php?fid=&type=atom1.0&limit=15. The thread titles (within title elements of the generated XML documents) aren't sanitized, leading to XSS.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
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 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.26% (0.02261) | 82.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.26% (0.02261) | 80.64th | v5 (v2026.06.15) |
| Apr 8, 2025 | 1.44% (0.01435) | 79.00th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.48% (0.02479) | 84.20th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.00% (0.01003) | 84.31th | v3 (v2023.03.01) |
| Jul 7, 2024 | 1.00% (0.01003) | 83.76th | v3 (v2023.03.01) |
| Jan 19, 2024 | 1.49% (0.01494) | 85.51th | v3 (v2023.03.01) |
| Sep 3, 2023 | 1.76% (0.01760) | 86.44th | v3 (v2023.03.01) |
| Mar 11, 2023 | 2.44% (0.02435) | 88.26th | v3 (v2023.03.01) |
| Mar 7, 2023 | 68.00% (0.68001) | 97.35th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02173) | 80.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02173) | 57.83th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.74% (0.02742) | 0.00th | v1 |
References (2)
- https://blog.mybb.com/2018/08/22/mybb-1-8-18-released-security-maintenance-release/ x_refsource_CONFIRMVendor Advisory
- https://www.exploit-db.com/exploits/45393/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| https://blog.mybb.com/2018/08/22/mybb-1-8-18-released-security-maintenance-release/ | x_refsource_CONFIRMVendor Advisory | |
| https://www.exploit-db.com/exploits/45393/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.