JLSEC-2026-1

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Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-1.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/JLSEC-2026-1
Upstream
Published
2026-03-23T22:38:33.248Z
Modified
2026-03-23T22:45:10.161896Z
Summary
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of se...
Details

In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2onframerecvcallback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.

Database specific 
{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "imported": "2026-03-23T22:20:24.429Z",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-11080",
            "modified": "2024-11-21T04:56:44.657Z",
            "id": "CVE-2020-11080",
            "published": "2020-06-03T23:15:11.073Z",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-11080"
        }
    ]
}
References

Affected packages

Julia / nghttp2_jll

Package

Name
nghttp2_jll
Purl
pkg:julia/nghttp2_jll?uuid=8e850ede-7688-5339-a07c-302acd2aaf8d

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.41.0+0

Database specific

source 
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1.json"