CVE-2026-5598
High
Description
Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules). This vulnerability is associated with program files FrodoEngine.Java. This issue affects BC-JAVA: from 1.71 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84.
SeverityHigh
CVSS7.5
Exploit probability—
ProductOrg.bouncycastle:bcprov-jdk15to18
PublishedApr 15, 2026
First seenApr 15, 2026
Weakness typeCWE-385CWE-385
How to fix
Update
- org.bouncycastle:bcprov-jdk15to181.80.2 or later
- org.bouncycastle:bcprov-jdk141.81.1, 1.84 or later
- org.bouncycastle:bcprov-jdk18on1.84, 1.80.2 or later
Patches
Vendor advisories
- github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%905598
- access.redhat.com/errata/RHSA-2026:53644
- access.redhat.com/errata/RHSA-2026:12267
- access.redhat.com/errata/RHSA-2026:53645
- access.redhat.com/errata/RHSA-2026:18054
- access.redhat.com/errata/RHSA-2026:53646
- access.redhat.com/errata/RHSA-2026:18055
- access.redhat.com/errata/RHSA-2026:12269
- access.redhat.com/errata/RHSA-2026:18059
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| org.bouncycastle:bcprov-jdk15to18Maven | 1.71 ≤ v < 1.80.2 | 1.80.2 |
| org.bouncycastle:bcprov-jdk14Maven | 1.81 ≤ v < 1.81.1, 1.71 ≤ v < 1.84 | 1.81.1, 1.84 |
| org.bouncycastle:bcprov-jdk18onMaven | 1.82 ≤ v < 1.84, 1.81 ≤ v < 1.81.1, 1.71 ≤ v < 1.80.2 | 1.84, 1.80.2 |
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