| Package | Affected versions | Patched versions |
|---|---|---|
| org.apache.httpcomponents.core5:httpcore5-h2 | ≥ 5.5-alpha1, < 5.5-beta2< 5.4.3 | 5.5-beta25.4.3 |
| httpcomponents core | = 5.5≥ 5.0, ≤ 5.4.2 |
Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending oversized compressed header blocks before the HTTP/2 SETTINGS acknowledgement causes the configured header list size limit to be applied.
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