Vulnerability details
CVE-2026-115482
litespeedtech lsquic
CVSS 3.1
7.5High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (mitre) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| litespeedtech | lsquic | v < 4.9.0 | CVEProject cvelistV5 (CNA) |
References and advisories
3
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Details
- Published
- 2026-10-22
- Last updated
- 2026-10-22
- State
- Published
- Assigner (CNA)
- mitre
Exploit prediction (EPSS)
0.44%
Probability of exploitation in 30 days
38.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-770Allocation of Resources Without Limits or Throttling