JLSEC-2026-268

Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-268.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-268.json
JSON Data
https://api.osv.dev/v1/vulns/JLSEC-2026-268
Upstream
  • EUVD-2025-31727
  • GHSA-76r2-c3cg-f5r9
Published
2026-04-27T18:33:55.942Z
Modified
2026-04-27T19:02:51.313882340Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Issue summary: An application using the OpenSSL HTTP client API functions may trigger an out-of...
Details

Issue summary: An application using the OpenSSL HTTP client API functions may trigger an out-of-bounds read if the 'no_proxy' environment variable is set and the host portion of the authority component of the HTTP URL is an IPv6 address.

Impact summary: An out-of-bounds read can trigger a crash which leads to Denial of Service for an application.

The OpenSSL HTTP client API functions can be used directly by applications but they are also used by the OCSP client functions and CMP (Certificate Management Protocol) client implementation in OpenSSL. However the URLs used by these implementations are unlikely to be controlled by an attacker.

In this vulnerable code the out of bounds read can only trigger a crash. Furthermore the vulnerability requires an attacker-controlled URL to be passed from an application to the OpenSSL function and the user has to have a 'no_proxy' environment variable set. For the aforementioned reasons the issue was assessed as Low severity.

The vulnerable code was introduced in the following patch releases: 3.0.16, 3.1.8, 3.2.4, 3.3.3, 3.4.0 and 3.5.0.

The FIPS modules in 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue, as the HTTP client implementation is outside the OpenSSL FIPS module boundary.

Database specific
{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "database_specific": {
                "status": "Deferred"
            },
            "modified": "2026-04-15T00:35:42.020Z",
            "id": "CVE-2025-9232",
            "published": "2025-09-30T14:15:41.313Z",
            "imported": "2026-04-27T16:36:28.748Z",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-9232",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-9232"
        },
        {
            "modified": "2025-11-05T00:31:29Z",
            "url": "https://api.github.com/advisories/GHSA-76r2-c3cg-f5r9",
            "id": "GHSA-76r2-c3cg-f5r9",
            "published": "2025-09-30T15:30:30Z",
            "imported": "2026-04-27T16:34:16.196Z",
            "html_url": "https://github.com/advisories/GHSA-76r2-c3cg-f5r9"
        },
        {
            "modified": "2025-11-04T21:15:19Z",
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2025-31727",
            "id": "EUVD-2025-31727",
            "published": "2025-09-30T13:17:19Z",
            "imported": "2026-04-27T16:33:10.354Z",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-31727"
        }
    ]
}
References

Affected packages

Julia / OpenSSL_jll

Package

Name
OpenSSL_jll
Purl
pkg:julia/OpenSSL_jll?uuid=458c3c95-2e84-50aa-8efc-19380b2a3a95

Affected ranges

Type
SEMVER
Events
Introduced
3.0.16+0
Fixed
3.0.20+0
Introduced
3.5.0+0
Fixed
3.5.4+0

Database specific

source
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-268.json"