CVE-2026-44018: CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) in docling-project docling
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.
AI Analysis
Technical Summary
CVE-2026-44018 affects docling-project's docling software in versions >=2.45.0 and <2.91.0. The METS-GBS backend's XML parsing and input document format detection lack sufficient security controls, enabling attackers to craft malicious METS-GBS archives. Processing these archives can lead to resource exhaustion, application crashes, or unauthorized reading of sensitive files due to improper handling of highly compressed data (CWE-409) and related XML parsing issues (CWE-611, CWE-776). The vulnerability has a CVSS 3.1 base score of 5.5 (medium severity) with local attack vector, low complexity, no privileges required, user interaction required, unchanged scope, no confidentiality or integrity impact, but high availability impact. The issue is resolved in version 2.91.0.
Potential Impact
An attacker who can supply malicious METS-GBS archives to docling versions >=2.45.0 and <2.91.0 may cause denial of service via resource exhaustion or application crashes. There is no direct confidentiality or integrity impact confirmed. The vulnerability arises from improper handling of highly compressed data leading to data amplification and unsafe XML parsing.
Mitigation Recommendations
This vulnerability is fixed in docling version 2.91.0. Users should upgrade to version 2.91.0 or later to remediate this issue. No official patch or temporary workaround is indicated in the advisory. Until upgrading, avoid processing untrusted METS-GBS archives to reduce risk.
CVE-2026-44018: CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) in docling-project docling
Description
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.
CVSS v3.1
Score 5.5medium
Affected software
pkg:github/docling-project/doclingRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-44018 affects docling-project's docling software in versions >=2.45.0 and <2.91.0. The METS-GBS backend's XML parsing and input document format detection lack sufficient security controls, enabling attackers to craft malicious METS-GBS archives. Processing these archives can lead to resource exhaustion, application crashes, or unauthorized reading of sensitive files due to improper handling of highly compressed data (CWE-409) and related XML parsing issues (CWE-611, CWE-776). The vulnerability has a CVSS 3.1 base score of 5.5 (medium severity) with local attack vector, low complexity, no privileges required, user interaction required, unchanged scope, no confidentiality or integrity impact, but high availability impact. The issue is resolved in version 2.91.0.
Potential Impact
An attacker who can supply malicious METS-GBS archives to docling versions >=2.45.0 and <2.91.0 may cause denial of service via resource exhaustion or application crashes. There is no direct confidentiality or integrity impact confirmed. The vulnerability arises from improper handling of highly compressed data leading to data amplification and unsafe XML parsing.
Mitigation Recommendations
This vulnerability is fixed in docling version 2.91.0. Users should upgrade to version 2.91.0 or later to remediate this issue. No official patch or temporary workaround is indicated in the advisory. Until upgrading, avoid processing untrusted METS-GBS archives to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-04T21:24:36.506Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3ea39f6e08203f7db8ff8a
Added to database: 06/26/2026, 16:06:55 UTC
Last enriched: 06/26/2026, 16:22:28 UTC
Last updated: 06/26/2026, 18:34:38 UTC
Views: 5
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