GHSA-c6c4-7x48-4cqp
Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18
Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.4.6 (Vaadin 14.0.0 through 14.4.6), 3.0.0 prior to 5.0.0 (Vaadin 15 prior to 18), and 5.0.0 through 5.0.2 (Vaadin 18.0.0 through 18.0.5) allows attacker to guess a security token via timing attack.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
What each source reports
GitHub Advisories Score used
Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18
Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.4.6 (Vaadin 14.0.0 through 14.4.6), 3.0.0 prior to 5.0.0 (Vaadin 15 prior to 18), and 5.0.0 through 5.0.2 (Vaadin 18.0.0 through 18.0.5) allows attacker to guess a security token via timing attack.
- Record
GHSA-c6c4-7x48-4cqp- CVSS 3.1
- 4.0 Medium
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-208
- Updated
- 2026-11-02
OSV
Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18
Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.4.6 (Vaadin 14.0.0 through 14.4.6), 3.0.0 prior to 5.0.0 (Vaadin 15 prior to 18), and 5.0.0 through 5.0.2 (Vaadin 18.0.0 through 18.0.5) allows attacker to guess a security token via timing attack.
- Record
GHSA-c6c4-7x48-4cqp- CVSS 3.1
- 4.0 Medium
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-208
- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.vaadin:vaadin-bomMaven | 10.0.0 up to 10.0.17 | 10.0.17 |
com.vaadin:vaadin-bomMaven | 11.0.0 up to 14.4.7 | 14.4.7 |
com.vaadin:vaadin-bomMaven | 15.0.0 up to 18.0.6 | 18.0.6 |
com.vaadin:vaadin-bomMaven | 10.0.0 up to 10.0.17, plus listed versions 10.0.110.0.1010.0.1110.0.1210.0.13 Show 11 moreShow less10.0.1410.0.1510.0.1610.0.210.0.310.0.410.0.510.0.610.0.710.0.810.0.9 | 10.0.17 |
com.vaadin:vaadin-bomMaven | 11.0.0 up to 14.4.7, plus listed versions 11.0.111.0.211.0.311.0.412.0.0 Show 45 moreShow less12.0.112.0.212.0.312.0.412.0.512.0.612.0.713.0.013.0.113.0.1013.0.1113.0.1213.0.1313.0.213.0.313.0.413.0.513.0.613.0.713.0.813.0.914.0.014.0.114.0.1014.0.1114.0.1214.0.1314.0.1414.0.1514.0.214.0.314.0.414.0.514.0.614.0.714.0.814.0.914.1.014.1.114.1.1614.1.1714.1.1814.1.1914.1.214.1.20 | 14.4.7 |
com.vaadin:vaadin-bomMaven | 15.0.0 up to 18.0.6, plus listed versions 15.0.115.0.215.0.315.0.415.0.5 Show 24 moreShow less15.0.616.0.016.0.116.0.216.0.316.0.416.0.517.0.017.0.117.0.1017.0.1117.0.217.0.317.0.417.0.617.0.717.0.817.0.918.0.018.0.118.0.218.0.318.0.418.0.5 | 18.0.6 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-c6c4-7x48-4cqp is a medium vulnerability (CVSS 4.0) in com.vaadin:vaadin-bom, published April 19, 2021. No source lists public exploit code. Fixed in com.vaadin:vaadin-bom 10.0.17.
References
Left out here: 32 versions. The JSON record has them.