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CVE-2016-2403
Symfony before 2.8.6 and 3.x before 3.0.6 allows remote attackers to bypass authentication by logging in with an empty password and valid…
Critical9.8EPSS 4.3%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Symfony before 2.8.6 and 3.x before 3.0.6 allows remote attackers to bypass authentication by logging in with an empty password and valid username, which triggers an unauthenticated bind.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 4.3% · top 8.9% of all CVEs (2 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Packagistsymfony/securityGHSA-wvj5-r78r-hhfq (opens in a new tab)
- Packagistsymfony/security-coreGHSA-wvj5-r78r-hhfq (opens in a new tab)
- Packagistsymfony/symfonyGHSA-wvj5-r78r-hhfq (opens in a new tab)
References (3)
- http://symfony.com/blog/cve-2016-2403-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-4262 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 96137 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-wvj5-r78r-hhfq (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .