What’s Vulnerable › Vulnerabilities
CVE-2024-10549: Denial of Service by ReDOS in h2oai/h2o-3
- Severity: high (CVSS 7.5 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2025-03-20 · updated 2026-06-17
- Weakness: CWE-1333
Description
A vulnerability in the `/3/Parse` endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint uses a user-specified string to construct a regular expression, which is then applied to another user-specified string. By sending multiple simultaneous requests, an attacker can exhaust all available threads, leading to a complete denial of service.
Affected products
- h2oai/h2o-3: 3.46.0.1
References
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