Low severity · published Apr 23, 2021
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…
2.5
CVSS
0.3%
EPSS
No
On KEV
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
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VA
Vaadin · Vaadin
7.0.0 before 7.7.24; 8.0.0 before 8.12.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31403
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31403
Patch
https://github.com/vaadin/framework/pull/12188
Patch
https://github.com/vaadin/framework/pull/12190
Vendor Advisory
https://vaadin.com/security/cve-2021-31403
More from Vaadin
8.4
CVE-2026-107588
Multiple Vulnerabilities in the Highcharts Library Bundled with Vaadin Charts
7.8
CVE-2021-31411
Insecure temporary directory usage in frontend build functionality of com.vaadin:flow-server versions 2.0.9 through 2.5.2 (Vaadin 14.0.3 through Vaadin 14.5.2), 3.0 prior to 6.0…
7.5
CVE-2022-29567
The default configuration of a TreeGrid component uses Object::toString as a key on the client-side and server communication in Vaadin 14.8.5 through 14.8.9, 22.0.6 through…
7.5
CVE-2021-31409
Unsafe validation RegEx in EmailValidator component in com.vaadin:vaadin-compatibility-server versions 8.0.0 through 8.12.4 (Vaadin versions 8.0.0 through 8.12.4) allows attackers…
7.5
CVE-2021-31407
Vulnerability in OSGi integration in com.vaadin:flow-server versions 1.2.0 through 2.4.7 (Vaadin 12.0.0 through 14.4.9), and 6.0.0 through 6.0.1 (Vaadin 19.0.0) allows attacker to…