CVE-2021-31403

MEDIUM

Vaadin 7.0.0-7.7.23 and 8.0.0-8.12.2 - Observable Timing Discrepancy in CSRF Token Comparison

Title source: llm
STIX 2.1

Description

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

References (3)

Core 3
Core References
Vendor Advisory x_refsource_misc
https://vaadin.com/security/cve-2021-31403
Patch, Third Party Advisory x_refsource_misc
https://github.com/vaadin/framework/pull/12190
Patch, Third Party Advisory x_refsource_misc
https://github.com/vaadin/framework/pull/12188

Scores

CVSS v3 4.0
EPSS 0.0031
EPSS Percentile 22.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Details

CWE
CWE-208 CWE-203
Status published
Products (3)
com.vaadin/vaadin-bom 7.0.0 - 7.7.24Maven
com.vaadin/vaadin-server 7.0.0 - 7.7.24Maven
vaadin/vaadin 7.0.0 - 7.7.24
Published Apr 23, 2021
Tracked Since Feb 18, 2026