JLSEC-2026-1207

Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-1207.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1207.json
JSON Data
https://api.test.osv.dev/v1/vulns/JLSEC-2026-1207
Upstream
  • EUVD-2026-29928
  • GHSA-2jc6-hc33-hv48
Published
2026-08-07T20:11:58.984Z
Modified
2026-08-07T20:29:10.235969879Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Using libcurl, when a custom `Host:` header is first set for an HTTP request and a second request...
Details

Using libcurl, when a custom Host: header is first set for an HTTP request and a second request is subsequently done using the same easy handle but without the custom Host: header set, the second request would use stale information and pass on cookies meant for the first host in the second request. Leak them.

Database specific
{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "imported": "2026-08-07T19:54:38.653Z",
            "database_specific": {
                "status": "Analyzed"
            },
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6276",
            "id": "CVE-2026-6276",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-6276",
            "published": "2026-05-13T13:01:56.800Z",
            "modified": "2026-06-17T11:00:35.067Z"
        },
        {
            "imported": "2026-08-07T19:56:10.488Z",
            "id": "GHSA-2jc6-hc33-hv48",
            "html_url": "https://github.com/advisories/GHSA-2jc6-hc33-hv48",
            "url": "https://api.github.com/advisories/GHSA-2jc6-hc33-hv48",
            "published": "2026-05-13T18:30:52Z",
            "modified": "2026-05-14T15:31:56Z"
        },
        {
            "imported": "2026-08-07T19:55:26.659Z",
            "id": "EUVD-2026-29928",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-29928",
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-29928",
            "published": "2026-05-13T08:28:19Z",
            "modified": "2026-05-13T17:26:06Z"
        }
    ]
}
References

Affected packages

Julia / CURL_jll

Package

Name
CURL_jll
Purl
pkg:julia/CURL_jll?uuid=b21e61f3-bafc-59ac-ab14-4c5c62d6588d

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.20.0+0

Database specific

source
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1207.json"

Julia / LibCURL_jll

Package

Name
LibCURL_jll
Purl
pkg:julia/LibCURL_jll?uuid=deac9b47-8bc7-5906-a0fe-35ac56dc84c0

Affected ranges

Type
SEMVER
Events
Introduced
7.71.1+0
Fixed
8.20.0+0

Database specific

source
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1207.json"