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High severity8.2NVD Advisory· Published Mar 30, 2026· Updated Apr 13, 2026

CVE-2026-32877

CVE-2026-32877

Description

Botan is a C++ cryptography library. From version 2.3.0 to before version 3.11.0, during SM2 decryption, the code that checked the authentication code value (C3) failed to check that the encoded value was of the expected length prior to comparison. An invalid ciphertext can cause a heap over-read of up to 31 bytes, resulting in a crash or potentially other undefined behavior. This issue has been patched in version 3.11.0.

AI Insight

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Affected products

2
  • Botan Project/Botan2 versions
    cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:*range: >=2.3.0,<3.11.0
    • (no CPE)range: >=2.3.0, <3.11.0

Patches

Vulnerability mechanics

References

1

News mentions

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