CVE-2026-44368 (GCVE-0-2026-44368)
Vulnerability from cvelistv5 – Published: 2026-05-13 20:18 – Updated: 2026-05-15 18:44
VLAI
EPSS
VEX
Title
PyQuorum: Timing side‑channel in mul_mod
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-15 18:43 UTC
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/svvqt/pyquorum/security/adviso… | x_refsource_CONFIRM |
Impacted products
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Nomenclature
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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