CVE-2026-2742

medium

Published 2026-03-10 · Modified 2026-03-13

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CVSS v3

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v4 NEW

5.3

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:A/V:D/RE:L/U:Amber

VIR risk

5.3

Description

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

Predictions

Exploit likelihood

63%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
Maven	com.vaadin:flow-server	`<14.14.1`	`14.14.1`
Maven	com.vaadin:flow-server	`>=23.0.0,<23.6.7`	`23.6.7`
Maven	com.vaadin:flow-server	`>=24.0.0,<24.9.8`	`24.9.8`
Maven	com.vaadin:flow-server	`>=25.0.0,<25.0.2`	`25.0.2`
Maven	com.vaadin:vaadin	`>=25.0.0,<25.0.2`	`25.0.2`
Maven	com.vaadin:vaadin	`>=24.0.0,<24.9.8`	`24.9.8`
Maven	com.vaadin:vaadin	`>=23.0.0,<23.6.7`	`23.6.7`
Maven	com.vaadin:vaadin	`<14.14.1`	`14.14.1`

Application impact

Vendor	Product	Versions	Fixed
vaadin	vaadin	`{"startIncluding":"10.0.0","endExcluding":"14.14.1"}`	`14.14.1`

References

CWEs

CWE-284

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.