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 whenenable_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 configuredbase_pathfor 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
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Python (PyPI) | docling | < 2.94.0 | 2.94.0 |
Referencias
- https://github.com/docling-project/docling/releases/tag/v2.94.0
- https://github.com/docling-project/docling/security/advisories/GHSA-q29v-xc37-wh5m
- https://nvd.nist.gov/vuln/detail/CVE-2026-47214
- https://github.com/docling-project/docling
- https://github.com/docling-project/docling/releases/tag/v2.91.0
- https://github.com/pypa/advisory-database/tree/main/vulns/docling/PYSEC-2026-2146.yaml
- https://github.com/docling-project/docling/pull/3400
- https://github.com/docling-project/docling/pull/3407
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L- Debilidad (CWE)
CWE-400, CWE-73- Plataforma
- Python (PyPI)
- Paquete
docling- Publicada
- 03.06.2026
- Actualizado
- 19.10.2026 22:17
Fuentes y licencias
OSV / GitHub Advisory Database - PYSEC-2026-2146 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-q29v-xc37-wh5m - CC BY 4.0
Historial de vulnerabilidades: docling
Todas las vulnerabilidades publicadas de este paquete (Python (PyPI)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 18
- Primera → última
- 05.2026 10.2026
- Sin corrección
- 2
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 7
- Media 10
- Baja 1
Divulgaciones por año
- 2026: 18
-
Docling: Unsafe URI and Path Handling in HTML Backend esta entrada
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