What is CVE-2026-115482?

CVE-2026-115482 is a high-severity vulnerability in Litespeedtech Lsquic, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-10-22.

How severe is CVE-2026-115482?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Litespeedtech Lsquic

CVE-2026-115482

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.

Published 2026-10-22 · last modified 2026-10-22.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Litespeedtech Lsquic

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

Frequently asked questions

What is CVE-2026-115482?: CVE-2026-115482 is a high-severity vulnerability in Litespeedtech Lsquic, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-10-22.
How severe is CVE-2026-115482?: High severity. CVSS v3 base score is 7.5 out of 10.