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CVE-2026-54428 Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5.4.2…

Description

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.

Affected products and versions

Product Affected versions Fixed in
Apache HttpComponents Core 5.5 5.5-alpha → 5.5-beta1 No fix stated
Apache HttpComponents Core 5.0 5.0-alpha → 5.4.2 No fix stated

References

Timeline

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The 2 CVEs of Apache HttpComponents Core →
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