cve-2026-93492

MEDIUM CVSS 5.3 nvd
Description

A flaw was found in Netty's HTTP/2 HpackEncoder. A remote attacker can exploit this by sending HTTP/2 SETTINGS frames with a very large MAX_HEADER_TABLE_SIZE. This causes the HpackEncoder to store an excessive number of unique headers, leading to increased CPU usage and memory consumption, ultimately resulting in a Denial of Service (DoS).

Timeline
Published
2026-09-18
Last Modified
2026-11-04
CVSS Details
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
Affected Products

No product information available.

Weaknesses (CWE)
CWE-1035
CVSS metrics
Version Base Severity Vector Exploitability Impact Source
3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L 3.9 1.4 secalert@redhat.com
NVD metadata
NVD status
Awaiting Analysis
Source identifier
secalert@redhat.com
References
Linked Vulnerabilities
cpuoct2026csaf csaf_oracle 

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Enrichment data
EPSS
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CISA KEV
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Aggregated bundle (all enrichments)
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