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Vulnerabilities / CVE-2026-59650

critical

CVE-2026-59650

bouncycastle: Bouncy Castle for Java: Cryptographic key compromise due to unvalidated Diffie-Hellman peer value

Published Modified CWE 20
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Red Hat7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (high), Amazon (high).

Description

In Bouncy Castle for Java before 1.85, MTI/A0 DH agreement exponentiates unvalidated peer value. This issue also affects Bouncy Castle for Java LTS before 2.73.12.

Affected packages and fixed versions

SourcePackageFixed in
amazon linux 2023bouncycastle, bouncycastle-javadoc, bouncycastle-mail and 4 more1.70-4.amzn2023.0.8
chainguardkeycloak-26.6, keycloak-26.726.6.7-r1 and 1 more
debian 11bouncycastleno fix listed
debian 12bouncycastleno fix listed
debian 13bouncycastleno fix listed
debian 14bouncycastle1.86-1
echobouncycastleno fix listed
rapidfort amazon linux 2023bouncycastle, bouncycastle-javadoc, bouncycastle-mail and 4 more1.70-4.amzn2023.0.8
rapidfort debian 12bouncycastle0:1.86-1
rapidfort debian 13bouncycastle0:1.86-1
Red Hatbcprov-jdk15on, bcprov-jdk18on, candlepin and 1 moreno fix listed
seal maven::Seal Security Databaseorg.bouncycastle:bcprov-jdk18on, seal.sp1.org.bouncycastle:bcprov-jdk18on, seal.sp2.org.bouncycastle:bcprov-jdk18on1.82+sp3p3, 1.84+sp2p2 and 2 more
Show all 31 entries from 13 sources
SourcePackageFixed in
amazon linux 2023bouncycastle1.70-4.amzn2023.0.8
amazon linux 2023bouncycastle-javadoc1.70-4.amzn2023.0.8
amazon linux 2023bouncycastle-mail1.70-4.amzn2023.0.8
amazon linux 2023bouncycastle-pg1.70-4.amzn2023.0.8
amazon linux 2023bouncycastle-pkix1.70-4.amzn2023.0.8
amazon linux 2023bouncycastle-tls1.70-4.amzn2023.0.8
amazon linux 2023bouncycastle-util1.70-4.amzn2023.0.8
chainguardkeycloak-26.626.6.7-r1
chainguardkeycloak-26.726.7.4-r1
debian 11bouncycastleno fix listed
debian 12bouncycastleno fix listed
debian 13bouncycastleno fix listed
debian 14bouncycastle1.86-1
echobouncycastleno fix listed
rapidfort amazon linux 2023bouncycastle1.70-4.amzn2023.0.8
rapidfort amazon linux 2023bouncycastle-javadoc1.70-4.amzn2023.0.8
rapidfort amazon linux 2023bouncycastle-mail1.70-4.amzn2023.0.8
rapidfort amazon linux 2023bouncycastle-pg1.70-4.amzn2023.0.8
rapidfort amazon linux 2023bouncycastle-pkix1.70-4.amzn2023.0.8
rapidfort amazon linux 2023bouncycastle-tls1.70-4.amzn2023.0.8
rapidfort amazon linux 2023bouncycastle-util1.70-4.amzn2023.0.8
rapidfort debian 12bouncycastle0:1.86-1
rapidfort debian 13bouncycastle0:1.86-1
Red Hatbcprov-jdk15onno fix listed
Red Hatbcprov-jdk18onno fix listed
Red Hatcandlepinno fix listed
Red Hatcandlepin-selinuxno fix listed
seal maven::Seal Security Databaseorg.bouncycastle:bcprov-jdk18on1.82+sp3p3, 1.84+sp2p2
seal maven::Seal Security Databaseseal.sp1.org.bouncycastle:bcprov-jdk18on1.82+sp999, 1.84+sp999
seal maven::Seal Security Databaseseal.sp2.org.bouncycastle:bcprov-jdk18on1.82+sp999
wolfikeycloak-26.626.6.7-r1

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.