{"id":"JLSEC-2026-677","summary":"wolfSSL SP Math All RSA implementation is vulnerable to the Marvin Attack, new variation of a...","details":"wolfSSL SP Math All RSA implementation is vulnerable to the Marvin Attack, new variation of a timing Bleichenbacher style attack, when built with the following options to configure:\n\n--enable-all CFLAGS=\"-DWOLFSSL_STATIC_RSA\"\n\nThe define “WOLFSSL_STATIC_RSA” enables static RSA cipher suites, which is not recommended, and has been disabled by default since wolfSSL 3.6.6.  Therefore the default build since 3.6.6, even with \"--enable-all\", is not vulnerable to the Marvin Attack. The vulnerability is specific to static RSA cipher suites, and expected to be padding-independent.\n\nThe vulnerability allows an attacker to decrypt ciphertexts and forge signatures after probing with a large number of test observations. However the server’s private key is not exposed.","modified":"2026-07-18T00:02:19.837263761Z","published":"2026-07-14T21:41:35.775Z","upstream":["CVE-2023-6935","GHSA-r36f-f47x-637q","EUVD-2023-59133"],"database_specific":{"license":"CC-BY-4.0","sources":[{"url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2023-6935","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6935","database_specific":{"status":"Modified"},"id":"CVE-2023-6935","imported":"2026-07-17T22:23:35.805Z","modified":"2026-06-17T06:51:43.017Z","published":"2024-02-09T23:15:08.030Z"},{"published":"2024-02-10T00:31:59Z","url":"https://api.github.com/advisories/GHSA-r36f-f47x-637q","html_url":"https://github.com/advisories/GHSA-r36f-f47x-637q","id":"GHSA-r36f-f47x-637q","imported":"2026-07-17T22:23:35.971Z","modified":"2024-11-07T21:32:40Z"},{"id":"EUVD-2023-59133","imported":"2026-07-17T22:23:40.336Z","modified":"2024-08-02T08:42:08Z","published":"2024-02-09T22:25:04Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2023-59133","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-59133"}]},"references":[{"type":"WEB","url":"https://github.com/advisories/GHSA-r36f-f47x-637q"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6935"},{"type":"WEB","url":"https://people.redhat.com/~hkario/marvin"},{"type":"WEB","url":"https://people.redhat.com/~hkario/marvin/"},{"type":"WEB","url":"https://www.wolfssl.com/docs/security-vulnerabilities"},{"type":"WEB","url":"https://www.wolfssl.com/docs/security-vulnerabilities/"}],"affected":[{"package":{"name":"wolfSSL_jll","ecosystem":"Julia","purl":"pkg:julia/wolfSSL_jll?uuid=98c43586-9870-5ae5-ab22-acc77b9bbdb5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"5.7.2+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-677.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}