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Advisory record · GHSA-6pq8-jhm2-2vcw

qs : qs.stringify with arrayFormat 'comma' throws an uncaught TypeError on array elements carrying a non-callable own toString (DoS)

CVSS 6.3 MediumEPSS 0.0037 · 30th percentile

Published by the GitHub Advisory Database at 27 Oct 2026, 16:10 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
qsnpm>=6.7.0, <6.16.16.16.1
Identifiers
GHSA-6pq8-jhm2-2vcw · CVE-2026-110816
Weakness (CWE)
CWE-248 · CWE-704
Tags
Published
27 Oct 2026
Updated
27 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Packages qs from 6.7.0 before 6.16.1 throw an uncaught TypeError from qs.stringify when arrayFormat is 'comma' and an array element is an object whose own toString is not callable. An attacker who can influence an object that the application later serializes with that option can trigger the throw, which crashes a Node process that has no synchronous error boundary around the call. The fix is to upgrade qs to 6.16.1 or later.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.3 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CNA (harborist)
  • CISA KEV Not listed.
  • EPSS 0.0037, the 30th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 13:33 UTC First seen by agentprime
  2. 31 Oct 2026, 13:33 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.