CVE-2026-115482
Quick assessment
Affected
litespeedtech lsquic
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 lsquic 4.9.0 之前的版本中，HTTP/3 实现可能因缓冲的头部集合数量未受限制而消耗过多内存，这一点可通过 QPACK 放大攻击加以证明。该问题与 和 相关。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| litespeedtech | lsquic | < 4.9.0 |
affected |
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I. Basic Information for CVE-2026-115482
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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 Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| litespeedtech | lsquic | 0 ~ 4.9.0 | - |
|
II. Public POCs for CVE-2026-115482
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-115482 (3)
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V. Comments for CVE-2026-115482
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