GHSA-7r92-3jgr-r65q

Source

https://github.com/advisories/GHSA-7r92-3jgr-r65q

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-7r92-3jgr-r65q/GHSA-7r92-3jgr-r65q.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-7r92-3jgr-r65q

Aliases

Published

2026-05-06T22:40:15Z

Modified

2026-07-13T16:43:13Z

Severity

6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

pyquorum: Timing side‑channel in mul_mod

Details

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

Database specific

{
    "cwe_ids":  [
        "CWE-208"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-05-06T22:40:15Z",
    "nvd_published_at":  "2026-05-13T21:16:47Z",
    "severity":  "MODERATE"
}

References

Affected packages

PyPI / pyquorum

Package

Name: pyquorum; View open source insights on deps.dev
Purl: pkg:pypi/pyquorum

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

0.2.1

Affected versions

0.*

0.1.0

0.1.1

0.1.2

0.1.3

0.2.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-7r92-3jgr-r65q/GHSA-7r92-3jgr-r65q.json"