Uncontrolled Recursion Affecting open-webui package, versions <0.8.12-r2


Severity

Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.52% (42nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-WOLFILATEST-OPENWEBUI-19517234
  • published3 Sept 2026
  • disclosed22 Aug 2026

Introduced: 22 Aug 2026

CVE-2026-66393  (opens in a new tab)
CWE-674  (opens in a new tab)

How to fix?

Upgrade Wolfi open-webui to version 0.8.12-r2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream open-webui package and not the open-webui package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

NLTK versions before 3.9.4 contain an unbounded recursion vulnerability in JSONTaggedDecoder.decode_obj() that allows attackers to cause denial of service by supplying deeply nested JSON structures. Attackers can craft JSON payloads exceeding the recursion limit to trigger an unhandled RecursionError that crashes the Python process.

CVSS Base Scores

version 3.1