XXE in Docling
CVE-2026-44018
Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.45.0 until 2.91.0, the METS-GBS backend's XML parsing and the input document format detection lacked security controls. An attacker could craft malicious METS-GBS archives that, when processed, could read sensitive files, exhaust system resources, or cause application crashes. This vulnerability is fixed in 2.91.0.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (4.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Docling
- Docling-Project Docling — versions >= 2.45.0, < 2.91.0
Weakness classification (CWE)
References
- github.com/docling-project/docling/security/advisories/GHSA-r3xg-rg9j-67fv (Patch, Vendor Advisory)
- github.com/docling-project/docling/releases/tag/v2.91.0 (Release Notes)
Frequently asked questions
- What is CVE-2026-44018?
- CVE-2026-44018 is a medium-severity vulnerability in Docling, classified under Improper Handling of Highly Compressed Data (Data Amplification). CVSS score: 5.5/10. Published 2026-06-26.
- How severe is CVE-2026-44018?
- Medium severity. CVSS v3 base score is 5.5 out of 10.