Docling: Unsafe URI and Path Handling in HTML Backend

### 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 `d

Docling: Potential Path Traversal via LaTeX \includegraphics and \input Commands

### Impact The LaTeX backend's handling of `\includegraphics`, `\input`, and `\include` commands lacked path containment validation. Attackers could craft malicious LaTeX documents with path traversal sequences (e.g., `../../../etc/passwd`) to: - Read arbitrary files from the file system accessible to the process - Include sensitive files in the converted document output - Potentially access configuration files, credentials, or other sensitive data ### Patches Fixed in version 2.91.0. The fix i

Docling: Unsafe XML Entity Expansion in USPTO Patent Backend

### Impact The USPTO patent XML parser used the standard `xml.sax.parseString()` without protection against XML External Entity (XXE) attacks. An attacker could craft malicious USPTO patent XML files with external entity references that could: - Read arbitrary files from the server filesystem - Perform Server-Side Request Forgery (SSRF) attacks - Cause denial of service through entity expansion (Billion Laughs attack) The vulnerability affects three USPTO patent format parsers: ICE (v4.x), Gran

Docling: Unsafe Archive Extraction and XML Parsing in METS-GBS Backend

### Impact The METS-GBS backend's XML parsing and the input document format detection lacked security controls, enabling: - XML External Entity (XXE) attacks to read local files or cause denial of service - Decompression bombs (zip bombs) to exhaust memory and disk space - Unbounded archive extraction consuming system resources An attacker could craft malicious METS-GBS archives that, when processed, could read sensitive files, exhaust system resources, or cause application crashes. ### Patche

Docling: Unsafe Playwright-based HTML Rendering

### Impact In versions `>= 2.82.0, < 2.91.0`, if the HTML backend was explicitly configured for rendering (rendering option by default deactivated), then the Playwright-based rendering feature could allow JavaScript execution and unrestricted network access when processing untrusted HTML documents. An attacker could craft malicious HTML that executes arbitrary JavaScript in the rendering context or makes unauthorized network requests to internal services, potentially leading to SSRF attacks, dat