JLSEC-2026-467

Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-467.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-467.json
JSON Data
https://api.osv.dev/v1/vulns/JLSEC-2026-467
Upstream
  • CVE-2026-34877
  • EUVD-2026-18394
Published
2026-05-07T16:17:33.752Z
Modified
2026-05-07T16:33:26.820734Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Mbed TLS serialized session data is not cryptographically protected
Details

An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can modify the serialized structures to induce memory corruption, leading to arbitrary code execution. This is caused by Incorrect Use of Privileged APIs.

Database specific
{
    "sources": [
        {
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34877",
            "database_specific": {
                "status": "Analyzed"
            },
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34877",
            "modified": "2026-04-06T21:06:00.037Z",
            "id": "CVE-2026-34877",
            "imported": "2026-05-07T15:20:24.757Z",
            "published": "2026-04-02T17:16:26.927Z"
        },
        {
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-18394",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-18394",
            "modified": "2026-04-02T17:52:53Z",
            "id": "EUVD-2026-18394",
            "imported": "2026-05-07T15:20:21.963Z",
            "published": "2026-04-02T00:00:00Z"
        }
    ],
    "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-2026-467.json"