JLSEC-2026-463

Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-463.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-463.json
JSON Data
https://api.osv.dev/v1/vulns/JLSEC-2026-463
Upstream
  • CVE-2025-66442
  • EUVD-2025-209171
Published
2026-05-07T16:17:33.752Z
Modified
2026-05-07T16:31:03.993557Z
Severity
  • 5.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Mbed TLS timing side channel in RSA and CBC/ECB decryption
Details

In Mbed TLS through 4.0.0, there is a compiler-induced timing side channel (in RSA and CBC/ECB decryption) that only occurs with LLVM's select-optimize feature. TF-PSA-Crypto through 1.0.0 is also affected.

Database specific
{
    "sources": [
        {
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-66442",
            "database_specific": {
                "status": "Analyzed"
            },
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66442",
            "modified": "2026-04-03T20:04:38.487Z",
            "id": "CVE-2025-66442",
            "imported": "2026-05-07T15:19:19.810Z",
            "published": "2026-04-01T20:16:22.107Z"
        },
        {
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2025-209171",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-209171",
            "modified": "2026-04-01T20:00:06Z",
            "id": "EUVD-2025-209171",
            "imported": "2026-05-07T15:19:16.982Z",
            "published": "2026-04-01T00:00:00Z"
        }
    ],
    "license": "CC-BY-4.0"
}
References

Affected packages

Julia / MbedTLS_jll

Package

Name
MbedTLS_jll
Purl
pkg:julia/MbedTLS_jll?uuid=c8ffd9c3-330d-5841-b78e-0817d7145fa1

Affected ranges

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

Database specific

source
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-463.json"