Improper Input Validation Affecting label-studio package, versions <1.23.1-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.37% (30th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-LABELSTUDIO-20147647
  • published26 Sept 2026
  • disclosed22 Jun 2026

Introduced: 22 Jun 2026

CVE-2026-54911  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Minimos:latest label-studio to version 1.23.1-r0 or higher.

NVD Description

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

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.13.0, ujson.dumps() (or ujson.dump() or ujson.encode()) have a reject_bytes=False option. When set, they may accept malformed or truncated UTF-8 byte sequences, silently rewriting them into different Unicode characters instead of rejecting them. This leads to input validation bypass and data integrity issues. This vulnerability is fixed in 5.13.0.

CVSS Base Scores

version 3.1