What’s Vulnerable › Vulnerabilities

CVE-2023-6017: H2O S3 Bucket Takeover

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-11-16 · updated 2026-06-17
• Weakness: CWE-840

Description

H2O included a reference to an S3 bucket that no longer existed allowing an attacker to take over the S3 bucket URL.

Affected products

• h2oai/h2o-3: all versions

References

• https://huntr.com/bounties/6a69952f-a1ba-4dee-9d8c-e87f52508b58
• https://huntr.com/bounties/6a69952f-a1ba-4dee-9d8c-e87f52508b58

Get alerted when CVE-2023-6017 or the next vulnerability affects your stack