PT-2026-59650 · Pypi · Pyquorum

Published 2026-07-13 · Updated 2026-07-13

OSV

CVSS v4.0

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Impact

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.

Patches

https://github.com/svvqt/pyquorum/releases/tag/v0.2.1

Fix

Related Identifiers

PYSEC-2026-3028

Affected Products

Pyquorum

References · 8

• https://osv.dev/vulnerability/PYSEC-2026-3028 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-44368 · Security Note
• https://github.com/svvqt/pyquorum/commit/1e9ac41dd3c305c13d7a6b7d227bf325be82d730 · Note
• https://github.com/svvqt/pyquorum/releases/tag/v0.2.1 · Note
• https://github.com/svvqt/pyquorum · Note
• https://pypi.org/project/pyquorum · Note
• https://github.com/svvqt/pyquorum/security/advisories/GHSA-7r92-3jgr-r65q · Note
• https://github.com/advisories/GHSA-7r92-3jgr-r65q · Note