MEDIUM
SimpleSAMLphp before 1.15.2 allows remote attackers to bypass an open redirect protection mechanism via crafted authority data in a URL
Published Feb 2, 2018
6.1
MEDIUMCVSS 3.0
EPSS 0.85%
Description
SimpleSAMLphp before 1.15.2 allows remote attackers to bypass an open redirect protection mechanism via crafted authority data in a URL.
Affected products
No data.
- ≥ 1.12.0 · < 1.15.1
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.
6.1 MEDIUM NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Impact Low
Integrity Impact Low
Availability Impact None
5.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.85% 0.00851
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00851
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.85% (0.00851) | 56.69th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.85% (0.00851) | 56.65th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.16% (0.00157) | 52.49th | v3 (v2023.03.01) |
| Dec 16, 2023 | 0.16% (0.00157) | 52.02th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.15% (0.00155) | 49.98th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.52% (0.00523) | 12.55th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.52% (0.00523) | 0.00th | v1 |
Weaknesses (1)
References (5)
- https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2018-6520.yaml
- https://github.com/advisories/GHSA-2qfc-48v5-4w5h Advisory
- https://github.com/simplesamlphp/simplesamlphp/issues/1473
- https://nvd.nist.gov/vuln/detail/CVE-2018-6520
- https://simplesamlphp.org/security/201801-02 x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Feb 2, 2018
Updated Aug 5, 2024
Reserved Feb 1, 2018
Link CVE-2018-6520
CISA Vulnrichment
GHSA-2QFC-48V5-4W5H Updated n/a