Jazzband Tablib up to 3.9.x HTML Export _html.py export_book HTML injection

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Jazzband Tablib up to 3.9.x. This affects the function export_book of the file _html.py of the component HTML Export. The manipulation leads to HTML injection. This vulnerability is uniquely identified as CVE-2026-9318. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Jazzband Tablib up to 3.9.x. It has been rated as problematic. This issue affects the function export_book of the file _html.py of the component HTML Export. The manipulation with an unknown input leads to a html injection vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-9318 since 05/22/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 3.10.0 eliminates this vulnerability.

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Productinfo

Vendor

• Jazzband

Name

• Tablib

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9

CPE 2.3info

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• 🔒
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CPE 2.2info

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