CVE-2026-3960

critical

Published 2026-04-23 · Modified 2026-05-05

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

9.8

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

9.8

Description

H2O-3 is Vulnerable to Code Injection

Predictions

Exploit likelihood

97%

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	ai.h2o:h2o-core	`<3.46.0.10`	`3.46.0.10`
MAVEN	ai.h2o:h2o-core	`< 3.46.0.10`	`3.46.0.10`

Application impact

Vendor	Product	Versions	Fixed
h2o	h2o	`{"endExcluding":"3.46.0.10"}`	`3.46.0.10`

References

CWEs

CWE-94

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

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