CVE-2026-5598
EPSS 0.02%Bouncy Castle Has Covert Timing Channel Vulnerability
Published: 4/17/2026Modified: 5/19/2026
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 1.80.1, from 1.82 before 1.84.
Affected packages (4)
- Debian/bouncycastlefrom 0
- Maven/org.bouncycastle:bcprov-jdk14>= 1.71, < 1.84
- Maven/org.bouncycastle:bcprov-jdk15to18>= 1.71, < 1.84
- Maven/org.bouncycastle:bcprov-jdk18on>= 1.71, < 1.84
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/S:P/AU:Y/U:Red |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-5598
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-5598
- PATCHhttps://github.com/bcgit/bc-java
- WEBhttps://github.com/bcgit/bc-java/commit/8692e6b2b191fc4aafa32545c7a78bdb9bf110c5
- WEBhttps://github.com/bcgit/bc-java/commit/94abbd56413dfdac651fd878bc60253871ef5e87
- WEBhttps://github.com/bcgit/bc-java/wiki/CVE-2026-5598