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GHSA-V3JC-474W-2WM6 Apache HttpComponents Core: HPackDecoder Unlimited Header List Size Before SETTINGS ACK

🗓️ 01 Jul 2026 18:31:56Reported by GoogleType 
osv
 osv🔗 osv.dev👁 4 Views

HPACK decoder in Apache HttpComponents Core 5.4.2 and earlier allows DoS via memory exhaustion before SETTINGS ACK limits apply.

Related
Refs
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IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite uses httpcore5-h2-5.3.4.jar which is vulnerable to CVE-2026-54428
6 Aug 202614:49
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IBM Security Bulletins		Security Bulletin: IBM App Connect Enterprise is vulnerable to multiple vulnerabilities due to linkify-it and httpcore5 (CVE-2026-59887, CVE-2026-54428 & CVE-2026-54399)
31 Jul 202614:58
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IBM Security Bulletins		Security Bulletin: IBM Enterprise Build of Quarkus is affected by multiple vulnerabilities
30 Jul 202606:03
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IBM Security Bulletins		Security Bulletin: IBM Sterling Control Center is affected by a vulnerability in httpcore5-h2 jar (CVE-2026-54428)
7 Aug 202605:10
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IBM Security Bulletins		Security Bulletin: IBM Quantum Safe Explorer is affected by multiple vulnerabilities
30 Jul 202608:39
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IBM Security Bulletins		Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to an Allocation of resources without limits or throttling vulnerability in Apache HttpComponents [CVE-2026-54428]
27 Jul 202620:09
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IBM Security Bulletins		Security Bulletin:Vulnerability in httpcore5 affects IBM Netezza Appliance
12 Aug 202608:31
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ATTACKERKB		CVE-2026-54428
1 Jul 202617:03
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Chainguard		CVE-2026-54428 vulnerabilities
14 Aug 202620:25
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Circl		CVE-2026-54428
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14 Aug 2026 15:42Current
4.7Medium risk
Vulners AI Score4.7
CVSS 3.17.5
EPSS0.00587
Apache HttpComponentsHPACK decoderHTTP/2denial of servicememory exhaustionresource limits
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