What’s Vulnerable › Vulnerabilities
CVE-2026-63270: Environment/ini-file leaks
- Severity: medium (CVSS 6.7 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-05 · updated 2026-10-06
- Weakness: CWE-200
Description
URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive information could be exfiltrated to a remote server on opening a document containing such links. The check added for CVE-2024-12426 did not cover every place a document can supply a URL. XForms instance data and the Calc csv and sql data providers still reached the expansion. In fixed versions these places refuse URLs with internal schemes when the URL comes from the document.
Affected products
- The Document Foundation LibreOffice: from 26.2 before < 26.2.5 — fixed in < 26.2.5
How to fix
Upgrade to a fixed version: The Document Foundation LibreOffice < 26.2.5. Check the vendor advisory for mitigations.
References
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