Improper Encoding or Escaping of Output Affecting label-studio package, versions <1.22.0-r7


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.29% (20th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LABELSTUDIO-15448232
  • published10 Mar 2026
  • disclosed5 Mar 2026

Introduced: 5 Mar 2026

CVE-2026-28348  (opens in a new tab)
CWE-116  (opens in a new tab)

How to fix?

Upgrade Chainguard label-studio to version 1.22.0-r7 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 Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

lxml_html_clean is a project for HTML cleaning functionalities copied from lxml.html.clean. Prior to version 0.4.4, the _has_sneaky_javascript() method strips backslashes before checking for dangerous CSS keywords. This causes CSS Unicode escape sequences to bypass the @import and expression() filters, allowing external CSS loading or XSS in older browsers. This issue has been patched in version 0.4.4.