# CVE-2024-7765: PYSEC-2026-1439 - H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing

Source: https://junglewise.ai/threats/cve-2024-7765-h2o-vulnerable-to-denial-of-service-dos-via-large-gzip-parsing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-07  
License: CC BY 4.0 with a link back

CVE-2024-7765 · Severity: low · CVSS 3 · Published 2026-07-07

H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing

Technologies: [ai.h2o:h2o-core (Maven)](https://junglewise.ai/threats/technologies/ai-h2o-h2o-core), [h2o (PyPI)](https://junglewise.ai/threats/technologies/h2o). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven), [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2024-7765 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2024-7765 being exploited in the wild.

**How severe is CVE-2024-7765?** Low severity, with a CVSS score of 3, published 7 July 2026.

**Which products and versions are affected?** ai.h2o:h2o-core (Maven) ECOSYSTEM:introduced=3.32.1.2,last_affected=3.46.0.2; h2o (PyPI) ECOSYSTEM:introduced=3.32.1.2,last_affected=3.46.0.2.

**Is there a fix for CVE-2024-7765?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2024-7765?** Check whether you run ai.h2o:h2o-core (Maven) or h2o (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- ai.h2o:h2o-core (Maven) ECOSYSTEM:introduced=3.32.1.2,last_affected=3.46.0.2
- h2o (PyPI) ECOSYSTEM:introduced=3.32.1.2,last_affected=3.46.0.2

## Identifiers

- CVE-2024-7765
- GHSA-6w62-3jvj-mfj6
- PYSEC-2026-1439

## Related threats

- [PYSEC-2026-1441 - H2O Vulnerable to Arbitrary File Overwrite](https://junglewise.ai/threats/cve-2024-8616-h2o-vulnerable-to-arbitrary-file-overwrite)
- [PYSEC-2026-1438 - H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request](https://junglewise.ai/threats/cve-2024-8062-h2o-vulnerable-to-denial-of-service-dos-via-head-request)
- [PYSEC-2026-1443 - H2O Vulnerable to Denial of Service (DoS) via `/3/ImportFiles` Endpoint](https://junglewise.ai/threats/cve-2024-7768-h2o-vulnerable-to-denial-of-service-dos-via-3-importfiles-endpoint)
- [PYSEC-2026-1442 - H2O Vulnerable to Execution of Arbitrary Files](https://junglewise.ai/threats/cve-2024-6863-h2o-vulnerable-to-execution-of-arbitrary-files)
- [PYSEC-2026-1436 - H2O Vulnerable to Arbitrary File Overwrite via File Export](https://junglewise.ai/threats/cve-2024-6854-h2o-vulnerable-to-arbitrary-file-overwrite-via-file-export)