CVE-2026-9318

Summary

tablib: Stored XSS in the HTML export via unescaped dataset title

Severity

medium

CVSS

5.4

EPSS

0.3% (p22)

CWE

CWE-79

Also known as

GHSA-gqgw-jghv-mxwx

Published

2026-08-12

Updated

2026-08-12

Advisory details

tablib prior to 3.10.0 contains a stored cross-site scripting vulnerability in the HTML export functionality that allows attackers to execute arbitrary JavaScript by embedding malicious payloads in dataset titles, which are interpolated unsanitized into HTML output via the export_book method in the _html.py format handler. Attackers can rename worksheet sheets in imported files such as XLSX, ODS, XLS, or YAML with script payloads that are assigned to the Dataset title attribute and rendered unescaped inside an HTML h3 tag, leading to session hijacking, unauthorized administrative actions, and sensitive data exposure when the output is rendered in a browser.

References

• https://github.com/advisories/GHSA-gqgw-jghv-mxwx
• https://nvd.nist.gov/vuln/detail/CVE-2026-9318
• https://github.com/jazzband/tablib/pull/668
• https://github.com/jazzband/tablib
• https://github.com/jazzband/tablib/releases/tag/v3.10.0
• https://www.vulncheck.com/advisories/tablib-versions-prior-to-stored-xss-via-html-export-dataset-title

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• CVE-2026-106102 — critical · npm/quasar
• CVE-2026-10032 — critical · npm/@a2ui/web_core
• CVE-2026-59167 — critical · npm/suneditor
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