CVE-2026-44368: CWE-208: Observable Timing Discrepancy in svvqt pyquorum
CVE-2026-44368 is a timing side-channel vulnerability in the pyquorum cryptographic library versions prior to 0. 2. 1. The vulnerability arises from the mul_mod function, which performs multiplication using a binary expansion loop whose execution time depends on the Hamming weight of the exponent. An attacker able to measure the timing of secret-sharing operations could gradually recover secret shares, potentially reconstructing the secret. This issue has been fixed in version 0. 2. 1 of pyquorum.
AI Analysis
Technical Summary
PyQuorum versions before 0.2.1 contain a timing side-channel vulnerability (CWE-208) in the mul_mod function used for secret sharing and key management. The function's execution time varies based on the Hamming weight of the exponent, allowing an attacker with timing measurement capabilities to infer secret share values. This can lead to the progressive recovery of secret shares and ultimately secret reconstruction. The vulnerability is addressed in pyquorum version 0.2.1.
Potential Impact
An attacker who can remotely measure the timing of secret-sharing operations may exploit this vulnerability to recover secret shares by analyzing timing discrepancies. This undermines the confidentiality of secrets managed by pyquorum prior to version 0.2.1. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade to pyquorum version 0.2.1 or later, where this timing side-channel vulnerability has been fixed. No other mitigation actions are indicated.
CVE-2026-44368: CWE-208: Observable Timing Discrepancy in svvqt pyquorum
Description
CVE-2026-44368 is a timing side-channel vulnerability in the pyquorum cryptographic library versions prior to 0. 2. 1. The vulnerability arises from the mul_mod function, which performs multiplication using a binary expansion loop whose execution time depends on the Hamming weight of the exponent. An attacker able to measure the timing of secret-sharing operations could gradually recover secret shares, potentially reconstructing the secret. This issue has been fixed in version 0. 2. 1 of pyquorum.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
PyQuorum versions before 0.2.1 contain a timing side-channel vulnerability (CWE-208) in the mul_mod function used for secret sharing and key management. The function's execution time varies based on the Hamming weight of the exponent, allowing an attacker with timing measurement capabilities to infer secret share values. This can lead to the progressive recovery of secret shares and ultimately secret reconstruction. The vulnerability is addressed in pyquorum version 0.2.1.
Potential Impact
An attacker who can remotely measure the timing of secret-sharing operations may exploit this vulnerability to recover secret shares by analyzing timing discrepancies. This undermines the confidentiality of secrets managed by pyquorum prior to version 0.2.1. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade to pyquorum version 0.2.1 or later, where this timing side-channel vulnerability has been fixed. No other mitigation actions are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-05T20:15:20.631Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a04e0c9cbff5d861008114f
Added to database: 5/13/2026, 8:36:25 PM
Last enriched: 5/13/2026, 8:52:26 PM
Last updated: 5/13/2026, 10:26:11 PM
Views: 2
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