| Package | Affected versions | Patched versions |
|---|---|---|
| ai.h2o:h2o-core | ≥ 3.30.0.7, ≤ 3.46.0.1 | |
| h2o | ≥ 3.30.0.7, ≤ 3.46.0.1 | |
| h2o | = 3.46.0.1 |
A vulnerability in the /3/ParseSetup endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint applies a user-specified regular expression to a user-controllable string. This can be exploited by an attacker to cause inefficient regular expression complexity, leading to the exhaustion of server resources and making the server unresponsive.
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