CVE-2026-115482

Published Oct 22, 2026

Last updated 4 days ago

CVSS high 7.5

Overview

Description
In lsquic before 4.9.0, the HTTP/3 implementation can use an excessive amount of memory because the number of buffered header sets is not limited, as demonstrated by a QPACK amplification attack. This is related to header_out_dynamic_entry and es_max_header_list_size.
Source
cve@mitre.org
NVD status
Deferred

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.5
Impact score
3.6
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity
HIGH

Weaknesses

cve@mitre.org
CWE-770

Social media

Hype score
Not currently trending

References

Sources include official advisories and independent security research.