CVE-2026-115482

7.5 HIGHpublic exploit available

Published 2026-10-22 · Updated 2026-10-22

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-770

Public exploit & PoC references

https://github.com/litespeedtech/lsquic/compare/v4.8.2...v4.9.0
https://github.com/litespeedtech/lsquic/pull/666

All references

https://foxio.io/blog/header-accordions-qpack-amplification-attacks-against-http-3-servers
https://github.com/litespeedtech/lsquic/compare/v4.8.2...v4.9.0
https://github.com/litespeedtech/lsquic/pull/666

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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