CVE-2024-7765 json
Denial of Service in h2oai/h2o-3
published last yr. modified 4mo ago also GHSA-6w62-3jvj-mfj6 , PYSEC-2026-1439 , EUVD-2025-6953
- cvss
- 7.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
Summary
In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.
Is CVE-2024-7765 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- huntr.com https://huntr.com/bounties/0e58b1a5-bdca-4e60-af92-09de9c76a9ff referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| OSV | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | h2o | >=3.32.1.2, <=3.46.0.2 |
no fix listed |
| maven | ai.h2o:h2o-core | >=3.32.1.2, <=3.46.0.2 |
no fix listed |
Affected products
- h2oai h2oai/h2o-3
Classification
- Weakness
-
- CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)
References
-
huntr.com
/bounties/0e58b1a5-bdca-4e60-af92-09de9c76a9ff
exploit, web
-
nvd.nist.gov
/vuln/detail/CVE-2024-7765
advisory
-
github.com
/h2oai/h2o-3
package
-
github.com
/h2oai/h2o-3/blob/7d418fa19d3ab434f742818e37f891bef9102c97/h2o-core/src/main/java/water/parser/ParseDataset.ja
web
-
pypi.org
/project/h2o
package
-
github.com
/advisories/GHSA-6w62-3jvj-mfj6
advisory
Sources
- CVE List CVE-2024-7765
- GitHub Advisory GHSA-6w62-3jvj-mfj6
- NVD CVE-2024-7765
- OSV PYSEC-2026-1439
Fencer Intel 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.