cumulative-distribution-function Infinite Loop vulnerability

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

• CVE-2021-29486: 1.98% estimated exploitation activity in the next 30 days; percentile 80.56 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact Apps using this library on improper data may crash or go into an infinite-loop In the case of a nodejs server-app using this library to act on invalid non-numeric data, the nodejs server may crash. This may affect other users of this server and/or require the server to be rebooted for proper operation. In the case of a browser app using this library to act on invalid non-numeric data, that browser may crash or lock up. A flaw enabling an infinite-loop was discovered in the code for evaluating the cumulative-distribution-function of input data. Although the documentation explains that numeric data is required, some users may confuse an array of strings like ["1","2","3","4","5"] for numeric data [1,2,3,4,5] when it is in fact string data. An infinite loop is possible when the cumulative-distribution-function is evaluated for a given point when the input data is string data rather than type number. This vulnerability enables an infinite-cpu-loop denial-of-service-attack on any…

Published by the source

4 May 2021, 17:43 UTC

Last modified by the source

4 May 2026, 08:46 UTC

Source last checked

26 Oct 2026, 12:17 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-58qp-5328-v7mh

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-58qp-5328-v7mh

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# Patch Next advisory brief: CVE-2021-29486

Advisory: cumulative-distribution-function Infinite Loop vulnerability
IDs: CVE-2021-29486, GHSA-58qp-5328-v7mh
Record: https://patchnext.com/advisories/cve-2021-29486 (revision 2, source checked 26 Oct 2026, 12:17 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: cumulative-distribution-function 2.0.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm cumulative-distribution-function: affected < 2.0.0; fixed in 2.0.0

## Suggested inspection (read-only)
- `npm ls cumulative-distribution-function --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on cumulative-distribution-function.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-58qp-5328-v7mh (OSV record GHSA-58qp-5328-v7mh lists affected ranges: npm cumulative-distribution-function >=0 <2.0.0 (fixed))
- Verified: https://github.com/advisories/GHSA-58qp-5328-v7mh (GitHub-reviewed advisory GHSA-58qp-5328-v7mh lists affected ranges: npm cumulative-distribution-function >=0 <2.0.0)

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