CVE-2021-31406

unknown

Published 2021-04-19 · Modified 2023-11-08

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

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

CVSS v4 NEW

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not yet in upstream

VIR risk

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Description

Timing side channel vulnerability in endpoint request handler in Vaadin 15-19

Predictions

Exploit likelihood

20%

Patch ETA

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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	`>=3.0.0,<5.0.4`	`5.0.4`
Maven	com.vaadin:flow-server	`>=6.0.0,<6.0.1`	`6.0.1`

References

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

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