Vulnerability in Sensiolabs Symfony
CVE-2019-18886
An issue was discovered in Symfony 4.2.0 to 4.2.11 and 4.3.0 to 4.3.7. The ability to enumerate users was possible due to different handling depending on whether the user existed when making unauthorized attempts to use the switch users functionality. This is related to symfony/security.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.016 (74.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/symfony/symfony/releases/tag/v4.3.8 (Release Notes)
- symfony.com/blog/symfony-4-3-8-released (Release Notes)
- symfony.com/blog/cve-2019-18886-prevent-user-enumeration-using-switch-user-func… (Vendor Advisory)
Frequently asked questions
- What is CVE-2019-18886?
- CVE-2019-18886 is a medium-severity vulnerability in Sensiolabs Symfony, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2019-11-21.
- How severe is CVE-2019-18886?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2019-18886 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.