PT-2026-46104 · Pypi · Docling

Published

2026-06-03

·

Updated

2026-06-03

CVSS v3.1

7.1

High

VectorAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L

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

Fix

Resource Exhaustion

Weakness Enumeration

CWE-73CWE-400

Related Identifiers

GHSA-Q29V-XC37-WH5M

Affected Products

Docling