CVE-2026-113787 odf-kit: HTML injection leading to XSS in odtToHtml() via unescaped style attribute values
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-113787?
CVE-2026-113787 is a medium-severity vulnerability in GitHubNewbie0 odf-kit, published on 21 Oct 2026.
Official description
odf-kit allows users to generate, fill, read, and convert OpenDocument Format files (.odt, .ods) in TypeScript and JavaScript. Starting in version 0.6.0 and prior to version 0.14.2, he renderer has an `escapeHtml()` helper and applies it consistently to text content and to attribute values — `href`, `src`, `alt`, `id`, `data-author`, `data-date`, citation text all go through it. The inline CSS strings do not. In `renderTextSpan` (`dist/odt/to-html/html-renderer.js:195`), the value of e.g. `fo:color` is copied from the document into `style.fontColor` verbatim by the parser (`extractSpanStyle`, read/parser.js:348), then concatenated raw into the attribute. A `"` in the value terminates the attribute early. The same unescaped `style="${...}"` pattern appears at roughly ten other emission sites: paragraph and heading (`paragraphStyleToCss`), table cells and rows (`cellStyleToCss`, `rowStyleToCss`), `<col>`, and the image style attribute. The affected source attributes include `fo:color`, `fo:background-color`, `fo:text-shadow`, `fo:letter-spacing`, `fo:font-family` (via both direct and font-face resolution), `fo:margin-*`, `fo:padding-*`, `fo:line-height`, `fo:border*`, and `style:vertical-align`. Version 0.14.2 contains a patch.
Weakness: CWE-79
Which versions are affected by CVE-2026-113787?
How do I fix CVE-2026-113787?
No fix has been published for CVE-2026-113787 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-113787 being exploited?
There is no known exploitation of CVE-2026-113787 in the wild and no public exploit code.
Sources
Also known as GHSA-3cgg-c5pp-57h6.