Blackboard Learn (Since at least 17th of October 2017) has allowed Unvalidated Redirects on any signed-in user through its endpoints for handling Shibboleth logins, as demonstrated by a webapps/bb-auth-provider-shibboleth-BBLEARN/execute/shibbolethLogin?returnUrl= URI
Published Apr 30, 2018
6.1
MEDIUMCVSS 3.0
EPSS 1.42%
Description
Blackboard Learn (Since at least 17th of October 2017) has allowed Unvalidated Redirects on any signed-in user through its endpoints for handling Shibboleth logins, as demonstrated by a webapps/bb-auth-provider-shibboleth-BBLEARN/execute/shibbolethLogin?returnUrl= URI.
Affected products
No data.
- ≤ 9.1
- 9.1
- 9.1
- 9.1
- 9.1
- 9.1
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.
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:P/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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.42% (0.01417) | 71.80th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.47% (0.01469) | 70.25th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.33% (0.00333) | 53.96th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.10% (0.00105) | 44.50th | v3 (v2023.03.01) |
| Sep 21, 2023 | 0.10% (0.00105) | 42.22th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.13% (0.00133) | 47.46th | v3 (v2023.03.01) |
| May 8, 2023 | 0.15% (0.00152) | 49.95th | v3 (v2023.03.01) |
| Apr 24, 2023 | 0.13% (0.00133) | 47.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00139) | 47.62th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.28% (0.03283) | 84.30th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.28% (0.03283) | 82.70th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.28% (0.03283) | 65.67th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.85% (0.03849) | 72.82th | v1 |
| Jan 6, 2022 | 3.85% (0.03849) | 72.58th | v1 |
| Sep 1, 2021 | 3.85% (0.03849) | 83.03th | v1 |
| Apr 14, 2021 | 3.85% (0.03849) | 0.00th | v1 |
References (3)
- http://seclists.org/fulldisclosure/2018/Apr/57 mailing-listx_refsource_FULLDISCMailing ListThird Party Advisory
- http://www.securitytracker.com/id/1040767 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://ethan.pm/blackboard.txt x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://seclists.org/fulldisclosure/2018/Apr/57 | mailing-listx_refsource_FULLDISCMailing ListThird Party Advisory | |
| http://www.securitytracker.com/id/1040767 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://ethan.pm/blackboard.txt | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.