CVE-2026-105747

Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.45.0 until 2.131.0, METS-GBS format detection in docling/datamodel/document.py and the backend in docling/backend/mets_gbs_backend.py call tarfile.TarFile.getmembers() before enforcing the max_member_count limit, causing the full archive member list to be allocated before the limit can stop processing. A small gzip-compressed tar archive with a very large number of empty members can therefore consume memory proportional to the declared member count, including during format detection before the allowed_formats restriction is applied. This issue is a residual weakness in the member-count protection added for CVE-2026-44018. This issue is fixed in 2.131.0.

• https://github.com/docling-project/docling/commit/ebae65cd71c37c88b36185b406a449b92d8f7ffaPatch
• https://github.com/docling-project/docling/pull/4412Issue Tracking
• https://github.com/docling-project/docling/releases/tag/v2.131.0Release Notes
• https://github.com/docling-project/docling/security/advisories/GHSA-3cr3-8m4c-fpxwPatch