Vulnerability · Published Aug 12, 2026 · Assigned by VulnCheck
CVE-2026-9318tablib versions prior to 3.10.0 Stored XSS via HTML Export Dataset Title
Medium 5.4
In plain English
A medium-severity cross-site scripting in tablib from Jazzband. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | python-tablib | no fix listed | DEBIAN-CVE-2026-9318 |
| Debian:13 | python-tablib | no fix listed | DEBIAN-CVE-2026-9318 |
| Debian:14 | python-tablib | 3.10.0-1 | DEBIAN-CVE-2026-9318 |
| PyPI | tablib | 3.10.0 | GHSA-gqgw-jghv-mxwx |
| PyPI | tablib | 3.10.0 | PYSEC-2026-3702 |
| Ubuntu:22.04:LTS | python-tablib | no fix listed | UBUNTU-CVE-2026-9318 |
| Ubuntu:24.04:LTS | python-tablib | no fix listed | UBUNTU-CVE-2026-9318 |
| Ubuntu:26.04:LTS | python-tablib | no fix listed | UBUNTU-CVE-2026-9318 |
| Ubuntu:26.10 | python-tablib | no fix listed | UBUNTU-CVE-2026-9318 |
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
References
- Product Repository product
- Pull Request issue-tracking
- Patch Release patch
- https://www.vulncheck.com/advisories/tablib-versions-prior-to-stored-xss-via-html-export-dataset-title third-party-advisory