CVE-2026-44368
CVE-2026-44368 · PyQuorum: Timing side‑channel in mul_mod
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PyQuorum is a cryptographic library for secret sharing and key management. Prior to 0.2.1, the mul_mod function implements multiplication via a binary expansion loop whose execution time depends on the Hamming weight of the second operand (the exponent). An attacker who can measure the time of secret‑sharing operations (e.g., via a remote service) could progressively recover the values of shares, ultimately leading to secret reconstruction. This vulnerability is fixed in 0.2.1.
CVSS 6.9 · Moyenne · EPSS 0,3% · Correctif disponible
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Pile logicielle: python