{"api_version":"1","generated_at":"2026-10-02T11:06:41+00:00","cve":"CVE-2026-103601","urls":{"html":"https://cve.report/CVE-2026-103601","api":"https://cve.report/api/cve/CVE-2026-103601.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-103601","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-103601"},"summary":{"title":"CcmBlockCipher and KCcmBlockCipher leave unverified plaintext in the output buffer after a failed tag check","description":"Release of unverified plaintext in the CCM (CcmBlockCipher) and DSTU 7624 CCM (KCcmBlockCipher) AEAD modes in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker to obtain decryptions of ciphertexts of their choosing via forged messages sent to an application that lets the output buffer of a failed decryption be observed, for example through buffer reuse or logging, because decryption wrote the recovered plaintext into the caller-supplied output buffer before checking the authentication tag and left it there when the check failed. 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