Partial-chain certificate verification may accept chains that terminate at a peer-supplied, untrusted intermediate certificate rather than a trusted anchor. An attacker could present a chain that ends at an intermediate they control and have it accepted as valid. This affects the OpenSSL compatibility certificate-path-building path (wolfSSLX509verifycert / X509STORE, OPENSSLEXTRA) when the X509VFLAGPARTIAL_CHAIN verify flag is enabled.
{
"sources": [
{
"database_specific": {
"status": "Analyzed"
},
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6091",
"imported": "2026-07-14T21:22:49.501Z",
"published": "2026-06-25T18:16:41.447Z",
"id": "CVE-2026-6091",
"modified": "2026-06-26T16:50:56.503Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-6091"
},
{
"published": "2026-06-25T18:30:41Z",
"imported": "2026-07-14T21:23:08.537Z",
"html_url": "https://github.com/advisories/GHSA-mhq8-94h7-mrgx",
"id": "GHSA-mhq8-94h7-mrgx",
"url": "https://api.github.com/advisories/GHSA-mhq8-94h7-mrgx",
"modified": "2026-06-26T18:34:51Z"
},
{
"url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-39486",
"imported": "2026-07-14T21:22:51.487Z",
"html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-39486",
"id": "EUVD-2026-39486",
"modified": "2026-06-25T17:58:31Z",
"published": "2026-06-25T16:46:12Z"
}
],
"license": "CC-BY-4.0"
}