CVE Explorer

CVE-2026-54428

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:10c833c986197bbb29dab589e6bc2b028f34a9bd30860d2de7ab74e260b92ef6

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:c6e248384844dc87d00138f55e2db43f858a0fc6049b04889c93bf1bfdb23e84 · sha256:4448631b864da655… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:c6e248384844dc87d00138f55e2db43f858a0fc6049b04889c93bf1bfdb23e84 · sha256:4448631b864da655… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion

{"collectionURL":"https://repo.maven.apache.org/maven2/","defaultStatus":"unaffected","packageName":"org.apache.httpcomponents.core5:httpcore5-h2","product":"Apache HttpComponents Core","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"5.5-beta1","status":"affected","version":"5.5-alpha","versionType":"maven"},{"lessThanOrEqual":"5.4.2","status":"affected","version":"5.0-alpha","versionType":"maven"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:c6e248384844dc87d00138f55e2db43f858a0fc6049b04889c93bf1bfdb23e84 · sha256:4448631b864da655… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:c6e248384844dc87d00138f55e2db43f858a0fc6049b04889c93bf1bfdb23e84 · sha256:4448631b864da655… · /containers/adp/1/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:c6e248384844dc87d00138f55e2db43f858a0fc6049b04889c93bf1bfdb23e84 · sha256:4448631b864da655… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:c6e248384844dc87d00138f55e2db43f858a0fc6049b04889c93bf1bfdb23e84 · sha256:4448631b864da655… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions

{"url":"http://www.openwall.com/lists/oss-security/2026/07/01/3"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c6e248384844dc87d00138f55e2db43f858a0fc6049b04889c93bf1bfdb23e84 · sha256:4448631b864da655… · /containers/adp/0/references/0

{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/5zjp8vczvxq19pw2rvhs21q446bhl0sd"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c6e248384844dc87d00138f55e2db43f858a0fc6049b04889c93bf1bfdb23e84 · sha256:4448631b864da655… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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