Vulnerability in Vaadin
CVE-2021-31403
Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:vaadin-server versions 7.0.0 through 7.7.23 (Vaadin 7.0.0 through 7.7.23), and 8.0.0 through 8.12.2 (Vaadin 8.0.0 through 8.12.2) allows attacker to guess a security token via timing attack
EPSS: 0.003 (22.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Vaadin — versions 7.0.0
- Vaadin Vaadin-server — versions 7.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@vaadin.com (x_refsource_MISC, Vendor Advisory)
- security@vaadin.com (Patch, Third Party Advisory, x_refsource_MISC)
- security@vaadin.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-31403?
- CVE-2021-31403 is a medium-severity vulnerability in Vaadin, classified under CWE-208. CVSS score: 4.0/10. Published 2021-04-23.
- How severe is CVE-2021-31403?
- Medium severity. CVSS v3 base score is 4.0 out of 10.
- Is CVE-2021-31403 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.