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Vaadin Vulnerable to Authentication Bypass When Accessing the /VAADIN Endpoint Without a Trailing Slash

🗓️ 10 Mar 2026 18:31:21Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 26 Views

Vaadin bypass on /VAADIN without trailing slash; affects Vaadin and Spring Security; upgrade.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-2742
10 Mar 202612:08
–attackerkb
circl
Circl
CVE-2026-2742
27 May 202618:01
–circl
cnnvd
CNNVD
Vaida security vulnerabilities
10 Mar 202600:00
–cnnvd
cve
CVE
CVE-2026-2742
10 Mar 202612:08
–cve
cvelist
Cvelist
CVE-2026-2742 Unauthorized session creation via reserved framework path access
10 Mar 202612:08
–cvelist
euvd
EUVD
EUVD-2026-10498
10 Mar 202618:31
–euvd
euvd
EUVD
EUVD-2026-10499
10 Mar 202618:31
–euvd
mend
Mend
CVE-2026-2742
10 Mar 202612:08
–mend
nvd
NVD
CVE-2026-2742
10 Mar 202618:18
–nvd
osv_cve
osv_cve
CVE-2026-2742 Unauthorized session creation via reserved framework path access
10 Mar 202612:08
–osv_cve
Rows per page
Vulners
Node
OR
com.vaadinvaadinRange<14.14.1maven
com.vaadinvaadinRange23.0.0–23.6.7maven
com.vaadinvaadinRange24.0.0–24.9.8maven
com.vaadinvaadinRange25.0.0–25.0.2maven
com.vaadinflow-serverRange25.0.0–25.0.2maven
com.vaadinflow-serverRange24.0.0–24.9.8maven
com.vaadinflow-serverRange23.0.0–23.6.7maven
com.vaadinflow-serverRange<14.14.1maven

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11 Mar 2026 19:00Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.3
CVSS 45.3
EPSS0.00407
SSVC
26