CVE-2026-47214
Docling: Unsafe URI and Path Handling in HTML Backend
Summary
### Impact The HTML backend did not perform sufficient validation during resource handling: - Accepted `file://` URIs enabling local file system access when `enable_local_fetch=True` - Path resolution allowed traversal outside intended directories via `../` sequences and absolute paths - Did not block internal network resources under `enable_remote_fetch=True` - HTTP redirects were not validated, potentially redirecting to unintended schemes - No resource limits for remote image downloads and `data:` URIs ### Patches Fixed in versions 2.91.0 (initial fixes) and 2.94.0 (additional improvements). The fixes implement: - Updated local path treatment: absolute files always blocked, relative paths require `enable_local_fetch=True` (default: False) and containment within configured `base_path` for path traversal protection - `file://` scheme stripped & treated as local path (above) - IP address validation to prevent SSRF - HTTP redirect validation, connection and read timeouts - Size limit for both remote images (with streaming download) and base64-decoded data URIs ### Workarounds Keep both `enable_local_fetch=False` and `enable_remote_fetch=False` (defaults) when processing untrusted HTML documents. ### References - Initial fixes: [v2.91.0](https://github.com/docling-project/docling/releases/tag/v2.91.0) - Additional improvements: [v2.94.0](https://github.com/docling-project/docling/releases/tag/v2.94.0)
Affected packages
| Ecosystem | Package | Affected versions | Fixed versions |
|---|---|---|---|
| PyPI | docling | — | 2.94.0 |
Remediation: Upgrade to 2.94.0 or later.
References
Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.
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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.