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
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | docling | < 2.94.0 | 2.94.0 |
References
- 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
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L- Weakness (CWE)
CWE-400, CWE-73- Platform
- Python (PyPI)
- Package
docling- Disclosed
- 03.06.2026
- Updated
- 19.10.2026 22:17
Sources and licenses
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
Vulnerability history: docling
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 18
- First → latest
- 05.2026 10.2026
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- High 7
- Medium 10
- Low 1
Disclosures per year
- 2026: 18
-
Docling: Unsafe URI and Path Handling in HTML Backend this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.