JLSEC-2026-231

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Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-231.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-231.json
JSON Data
https://api.test.osv.dev/v1/vulns/JLSEC-2026-231
Upstream
  • EUVD-2023-0751
Published
2026-04-27T18:33:55.942Z
Modified
2026-04-27T20:32:27.558462573Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
openssl-src subject to Timing Oracle in RSA Decryption
Details

A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE.

For example, in a TLS connection, RSA is commonly used by a client to send an encrypted pre-master secret to the server. An attacker that had observed a genuine connection between a client and a server could use this flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection and thus be able to decrypt the application data sent over that connection.

Database specific 
{
    "sources": [
        {
            "imported": "2026-04-27T16:32:35.717Z",
            "id": "CVE-2022-4304",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2022-4304",
            "modified": "2025-11-04T20:16:14.897Z",
            "database_specific": {
                "status": "Modified"
            },
            "published": "2023-02-08T20:15:23.887Z",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4304"
        },
        {
            "imported": "2026-04-27T16:33:31.082Z",
            "id": "GHSA-p52g-cm5j-mjv4",
            "published": "2023-02-08T22:31:42Z",
            "modified": "2025-11-04T22:08:29Z",
            "url": "https://api.github.com/advisories/GHSA-p52g-cm5j-mjv4",
            "html_url": "https://github.com/advisories/GHSA-p52g-cm5j-mjv4"
        },
        {
            "imported": "2026-04-27T16:33:12.570Z",
            "id": "EUVD-2023-0751",
            "published": "2023-02-08T19:04:28Z",
            "modified": "2025-11-04T19:14:12Z",
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2023-0751",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-0751"
        }
    ],
    "license": "CC-BY-4.0"
}
References
Credits

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
0Unknown introduced version / All previous versions are affected
Fixed
1.1.20+0

Database specific

source 
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-231.json"

Julia / Openresty_jll

Package

Name
Openresty_jll
Purl
pkg:julia/Openresty_jll?uuid=87da34d4-7b1b-5a94-8376-8cb65bf3132c

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.27.1+0

Database specific

source 
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-231.json"