CVE-2026-54428

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Source
https://cve.org/CVERecord?id=CVE-2026-54428
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-54428.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-54428
Aliases
Downstream
CGA (258)
CLEANSTART (30)
CLSA (6)
DEBIAN (1)
ECHO (1)
MINI (36)
ROOT (1)
UBUNTU (1)
Published
2026-07-01T17:03:53Z
Modified
2026-10-15T10:52:25Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Apache HttpComponents Core: HPackDecoder Unlimited Header List Size Before SETTINGS ACK
Details

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.

Database specific 
{
    "cna_assigner":  "apache",
    "cwe_ids":  [
        "CWE-400",
        "CWE-770"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54428.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "introduced":  "5.5-alpha"
                        },
                        {
                            "last_affected":  "5.5-beta1"
                        },
                        {
                            "introduced":  "5.0-alpha"
                        },
                        {
                            "last_affected":  "5.4.2"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StandardRange"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/apache/httpcomponents-core

Affected ranges

Type
GIT
Repo
https://github.com/apache/httpcomponents-core
Events
Introduced
2e0dabfb84ad49c76b8932f0bc5d0d85365976de
Last Affected
4ee5b2a75b847f9f82a3bfec4524c2cb4f4fb3a6
Introduced
75f51152de1bc5b05dc5576d07c0bec96a5d9bcc
Last Affected
fe165c869e50356c677b319c4ebf32d656352be3
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:apache:httpcomponents_core:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "5.0"
                },
                {
                    "last_affected":  "5.4.2"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:a:apache:httpcomponents_core:5.5:alpha1:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "5.5-alpha1"
                },
                {
                    "last_affected":  "5.5-alpha1"
                }
            ],
            "source":  "CPE_STRING"
        },
        {
            "cpe":  "cpe:2.3:a:apache:httpcomponents_core:5.5:beta1:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "5.5-beta1"
                },
                {
                    "last_affected":  "5.5-beta1"
                }
            ],
            "source":  "CPE_STRING"
        }
    ]
}

Affected versions

5.*
5.5-alpha1
5.5-beta1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-54428.json"