CVE-2026-105747

Docling: METS-GBS archive member limit enforced after full member enumeration (memory exhaustion during format detection)

Published Oct 5, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-3cr3-8m4c-fpxw Docling: METS-GBS archive member limit enforced after full member enumeration (memory exhaustion during format detection)
History
Type Values Removed Values Added
First Time appeared Docling
Docling docling
CPEs cpe:2.3:a:docling:docling:*:*:*:*:*:*:*:*
Vendors & Products Docling
Docling docling
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Docling-project
Docling-project docling
Vendors & Products Docling-project
Docling-project docling
Type Values Removed Values Added
Description 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.
Title Docling: METS-GBS archive member limit enforced after full member enumeration (memory exhaustion during format detection)
Weaknesses CWE-409
CWE-770
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Oct 6, 2026, 2:48 PM
Reserved
Oct 5, 2026, 7:11 PM
Status
Analyzed
Published
Oct 5, 2026, 10:16 PM
Modified
Oct 7, 2026, 6:54 PM
Severity
Moderate
Public date
Oct 5, 2026, 9:32 PM