CRITICAL
In Joomla! before 3.8.2, a bug allowed third parties to bypass a user's 2-factor authentication method
Published Nov 9, 2017
9.8
CRITICALCVSS 3.0
EPSS 4.40%
Description
In Joomla! before 3.8.2, a bug allowed third parties to bypass a user's 2-factor authentication method.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
4.40% 0.04398
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.04398
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.40% (0.04398) | 91.01th | v5 (v2026.06.15) |
| Aug 23, 2026 | 3.62% (0.03617) | 88.64th | v5 (v2026.06.15) |
| Jul 14, 2026 | 4.91% (0.04911) | 91.10th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.87% (0.03869) | 88.79th | v5 (v2026.06.15) |
| Jul 20, 2024 | 1.22% (0.01220) | 85.52th | v3 (v2023.03.01) |
| Oct 20, 2023 | 1.22% (0.01220) | 83.78th | v3 (v2023.03.01) |
| Jun 29, 2023 | 1.24% (0.01239) | 83.56th | v3 (v2023.03.01) |
| May 12, 2023 | 1.47% (0.01471) | 84.78th | v3 (v2023.03.01) |
| Apr 2, 2023 | 1.40% (0.01395) | 84.34th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.74% (0.01736) | 85.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v1 |
| Jan 6, 2022 | 0.83% (0.00833) | 23.96th | v1 |
| Sep 1, 2021 | 0.83% (0.00833) | 57.50th | v1 |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
Weaknesses (1)
References (3)
- http://www.securityfocus.com/bid/101701 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039757 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://developer.joomla.org/security-centre/713-20171102-core-2-factor-authentication-bypass x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/101701 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1039757 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://developer.joomla.org/security-centre/713-20171102-core-2-factor-authentication-bypass | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Nov 9, 2017
Updated Aug 5, 2024
Reserved Nov 6, 2017
Link CVE-2017-16634
CISA Vulnrichment
Updated n/a