Cross-site Scripting in invenio-previewer

Answer in brief

CVE-2019-1020019 records a Medium severity (CVSS 6.1) vulnerability in Cross-site Scripting in invenio-previewer. The current sources do not mark it as known exploited. The current feed maps invenio-previewer (pypi). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 16, 2019Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.1
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps invenio-previewer (pypi). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
invenio-previewerpypi	>=0 <1.0.0a12	1.0.0a12

Recommended response

Check inventory. Check lockfiles and deployed manifests for invenio-previewer.
Review the reported fix. Update invenio-previewer to 1.0.0a12 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jul 16, 2019
Evidence: source:osv:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source description

## Cross-Site Scripting (XSS) vulnerability in JSON, Markdown and iPython Notebook previewers ### Impact Several Cross-Site Scripting (XSS) vulnerabilities have been found in the JSON, Markdown and iPython Notebook previewers. The vulnerabilities would allow a malicous user to upload a JSON, Markdown or Notebook file with embedded scripts that would be executed by a victims browser. ### Patches Invenio-Previewer v1.0.0a12 fixes the issue. ### Workarounds You can remediate the vulnerability without upgrading by disabling the affected previewers. You do this by adding the following to your configuration: ```python PREVIEWER_PREFERENCE = [ 'csv_dthreejs', 'simple_image', # 'json_prismjs', 'xml_prismjs', # 'mistune', 'pdfjs', # 'ipynb', 'zip', ] ``` Afterwards, you should not be able to preview JSON, Markdown or iPython Notebook files. ### For more information If you have any questions or comments about this advisory: * Email us at [[email protected]](mailto:[email protected])

Quoted source text, attributed separately from HOL analysis.