{"id":"JLSEC-2026-697","summary":"X.509 trust-chain bypass in the OpenSSL compatibility certificate verifier...","details":"X.509 trust-chain bypass in the OpenSSL compatibility certificate verifier (`wolfSSL_X509_verify_cert()`). This affects only builds with --enable-opensslextra (`OPENSSL_EXTRA`) and whose application validates certificates by calling `X509_verify_cert()` with caller-supplied untrusted intermediate certificates; for those users it is critical, otherwise the library is unaffected. In particular, native wolfSSL TLS/DTLS usage is not impacted. wolfSSL's `X509_verify_cert()` temporarily loads each caller-supplied untrusted intermediate into the certificate manager but failed to drop them before the trusted-store check, so an untrusted intermediate could anchor the path itself. An attacker can present a chain that never reaches a configured trust anchor and have it accepted, resulting in acceptance of an attacker-controlled certificate. This is certificate verification independent of TLS (e.g. S/MIME/CMS, code/firmware signing, JWT/JWS x5c), is not specific to any key type or algorithm, and a single untrusted intermediate suffices. The default wolfSSL TLS handshake (`WOLFSSL_VERIFY_PEER`) is not affected; only TLS applications doing manual or deferred peer verification through this API are, which also requires --enable-sessioncerts.","modified":"2026-07-25T18:24:47.544201121Z","published":"2026-07-14T21:41:35.775Z","upstream":["CVE-2026-11310","GHSA-h4wh-367g-85gm","EUVD-2026-39548"],"database_specific":{"sources":[{"modified":"2026-06-26T18:54:51.247Z","published":"2026-06-25T20:17:09.777Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-11310","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-11310","database_specific":{"status":"Analyzed"},"id":"CVE-2026-11310","imported":"2026-07-17T22:26:55.492Z"},{"url":"https://api.github.com/advisories/GHSA-h4wh-367g-85gm","html_url":"https://github.com/advisories/GHSA-h4wh-367g-85gm","id":"GHSA-h4wh-367g-85gm","imported":"2026-07-17T22:26:55.648Z","modified":"2026-06-26T21:32:11Z","published":"2026-06-25T21:31:31Z"},{"imported":"2026-07-17T22:27:03.763Z","modified":"2026-06-26T14:02:37Z","published":"2026-06-25T19:38:19Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-39548","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-39548","id":"EUVD-2026-39548"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://github.com/advisories/GHSA-h4wh-367g-85gm"},{"type":"WEB","url":"https://github.com/wolfSSL/wolfssl/pull/10674"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-11310"},{"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":"5.8.4+0"},{"fixed":"5.9.2+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-697.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}