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Fencer Vulns
high 7.1

CVE-2024-1456 json

S3 Bucket Takeover in h2oai/h2o-3

published 2024-04-16 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-17207

cvss
7.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits
0
none known

Summary

An S3 bucket takeover vulnerability was identified in the h2oai/h2o-3 repository. The issue involves the S3 bucket 'http://s3.amazonaws.com/h2o-training', which was found to be vulnerable to unauthorized takeover.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.com https://huntr.com/bounties/7c1b7f27-52f3-4b4b-9d81-e277f5e0ab6b referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 7.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected products

  • h2oai h2oai/h2o-3
  • h2oai h2o-3

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.