CVE-2026-18040 HQC leaks private key information through secret-indexed GF(2^8) tables and a secret-dependent fixed-weight sampler
| Reporter | Title | Published | Views | Family All 38 |
|---|---|---|---|---|
 | CVE-2026-18040 | 3 Oct 202608:55 | – | cve |
 | CVE-2026-18040 | 3 Oct 202608:55 | – | debiancve |
 | EUVD-2026-92004 | 3 Oct 202608:55 | – | euvd |
 | CVE-2026-18040 | 3 Oct 202608:55 | – | mend |
 | CVE-2026-18040 | 3 Oct 202609:17 | – | nvd |
 | bouncycastle-1.86-1.1 on GA media (moderate) | 21 Oct 202600:00 | – | opensuse |
 | CLEANSTART-2026-BK39147 In Bouncy Castle for Java before 1 | 22 Oct 202600:39 | – | osv_cleanstart |
| CLEANSTART-2026-MV07927 In Bouncy Castle for Java before 1 | 15 Oct 202600:40 | – | osv_cleanstart |
| DEBIAN-CVE-2026-18040 | 3 Oct 202609:17 | – | osv_debian |
| OPENSUSE-SU-2026:12090-1 bouncycastle-1.86-1.1 on GA media | 9 Oct 202600:00 | – | osv_opensuse |
10
[
{
"vendor": "Legion of the Bouncy Castle Inc.",
"product": "BC-JAVA",
"platforms": [
"all"
],
"collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java/",
"packageName": "bcprov",
"repo": "https://github.com/bcgit/bc-java",
"packageURL": "pkg:maven/org.bouncycastle/bcprov-jdk18on",
"modules": [
"core"
],
"programFiles": [
"GF",
"HQCEngine",
"ReedSolomon",
"FastFourierTransform"
],
"versions": [
{
"status": "affected",
"version": "1.73",
"lessThan": "1.86",
"versionType": "maven"
}
],
"defaultStatus": "unaffected"
}
]Data
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03 Oct 2026 08:55Current
CVSS 45.9
EPSS0.00107
SSVC