CVE-2026-12803 in Bouncy Castle for Java

Riassunto

di MITRE • 03/08/2026

In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD forgery). This issue also affects Bouncy Castle for Java LTS before 2.73.12.

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• Responsabile: Bcorg
• Prenotare: 21/06/2026
• Divulgazione: 03/08/2026
• Moderazione: accettato
• Voce: VDB-385487
• CPE: pronto
• CWE: CWE-347 (confermato)
• CVSS: 5.4 (VulDB)
• EPSS: 0.00000
• KEV: no
• Attività: molto basso
• Settore: Chemical, Energy, ...

Fonti

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-12803
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12803
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-12803/