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TI-2026-32326 Aliases CVE-2026-44368GHSA-7r92-3jgr-r65q

PyQuorum: Timing side‑channel in mul_mod

Priority LOW 36CWE-208Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-208.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00314 24th percentileScored 2026-11-07
Fix Fixed pyquorum (svvqt): 0.2.1pyquorum (PyPI): 0.2.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
svvqtpyquorumbefore 0.2.10.2.1Patch availableCNA
—pyquorum (PyPI)before 0.2.10.2.1Patch availableGHSA-7r92-3jgr-r65q
  • pyquorum Vendorsvvqt Affected before 0.2.1 Fixed in 0.2.1 Patch available CNA
  • pyquorum (PyPI) Vendor— Affected before 0.2.1 Fixed in 0.2.1 Patch available GHSA-7r92-3jgr-r65q

Remediation

  • Fix · CNA pyquorum (svvqt) Fixed in 0.2.1
  • Fix · GHSA-7r92-3jgr-r65q pyquorum (PyPI) Fixed in 0.2.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44368
  2. 2026-10-03 Alias added: GHSA-7r92-3jgr-r65q

References

Advisory 1

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences