pymonocypher uses cython to wrap the Monocypher C library. Prior to version 4.0.2.8, the argon2i_32 implementation does not check the nb_blocks size. If the caller does not provide a sufficiently large buffer based on the API contract, then argon2i_32 will write past the end of the buffer and possibly corrupt the heap. This issue has been patched in version 4.0.2.8.
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Affected Vendors & Products
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History
Fri, 04 Sep 2026 16:00:00 +0000
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Jetperch
Jetperch pymonocypher |
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| Vendors & Products |
Jetperch
Jetperch pymonocypher |
Fri, 04 Sep 2026 09:30:00 +0000
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ssvc
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Thu, 03 Sep 2026 15:45:00 +0000
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| Description | pymonocypher uses cython to wrap the Monocypher C library. Prior to version 4.0.2.8, the argon2i_32 implementation does not check the nb_blocks size. If the caller does not provide a sufficiently large buffer based on the API contract, then argon2i_32 will write past the end of the buffer and possibly corrupt the heap. This issue has been patched in version 4.0.2.8. | |
| Title | pymonocypher: Potential heap buffer overflow on nb_blocks in argon2i_32 when provided buffer is too small | |
| Weaknesses | CWE-122 CWE-1284 CWE-787 |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-03T15:30:06.690Z
Updated: 2026-09-03T15:42:53.741Z
Reserved: 2026-06-10T16:43:31.241Z
Link: CVE-2026-53720
Updated: 2026-09-03T15:42:51.390Z
Status : Deferred
Published: 2026-09-03T16:17:25.360
Modified: 2026-09-09T21:09:13.080
Link: CVE-2026-53720
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