An issue was discovered in the Ldap component in Symfony 2.8.x before 2.8.37, 3.3.x before 3.3.17, 3.4.x before 3.4.7, and 4.0.x before 4.0.7
Published Jun 13, 2018
9.8
CRITICALCVSS 3.0
EPSS 2.34%
Description
An issue was discovered in the Ldap component in Symfony 2.8.x before 2.8.37, 3.3.x before 3.3.17, 3.4.x before 3.4.7, and 4.0.x before 4.0.7. It allows remote attackers to bypass authentication by logging in with a "null" password and valid username, which triggers an unauthenticated bind. NOTE: this issue exists because of an incomplete fix for CVE-2016-2403.
Affected products
No data.
- ≥ 2.8.0 · < 2.8.37
- ≥ 3.3.0 · < 3.3.17
- ≥ 3.4.0 · < 3.4.7
- ≥ 4.0.0 · < 4.0.7
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:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.34% (0.02345) | 83.05th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.34% (0.02345) | 81.38th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.62% (0.00621) | 79.08th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.62% (0.00621) | 78.20th | v3 (v2023.03.01) |
| May 5, 2023 | 0.62% (0.00621) | 75.76th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.88% (0.00879) | 80.00th | 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) |
| Feb 3, 2022 | 0.52% (0.00523) | 12.55th | v1 |
| Jan 6, 2022 | 0.52% (0.00523) | 12.10th | v1 |
| Sep 1, 2021 | 0.52% (0.00523) | 32.27th | v1 |
| Apr 14, 2021 | 0.52% (0.00523) | 0.00th | v1 |
References (9)
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-core/CVE-2018-11407.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2018-11407.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-11407.yaml
- https://github.com/advisories/GHSA-35c5-28pg-2qg4 Advisory
- https://github.com/symfony/symfony/commit/b46fc93785d37ffa5d706a82cd175b33ce8f2934
- https://github.com/symfony/symfony/pull/27377
- https://nvd.nist.gov/vuln/detail/CVE-2018-11407
- https://symfony.com/blog/cve-2018-11407-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password x_refsource_CONFIRMVendor Advisory
- https://symfony.com/cve-2018-11407
Change history (0)
No recorded changes yet.