CVE-2026-31248
HighSummary
Docling's METS GBS backend is vulnerable to XML Entity Expansion (XXE) attacks through version 2.61.0. An attacker can craft a malicious XML file with nested entity definitions, leading to excessive resource consumption during processing by the Docling parser.
Risk Assessment
This vulnerability can lead to a denial of service (DoS) condition on the system running the Docling parser, potentially affecting service availability for users.
Recommendation
It is recommended to update the METS GBS backend to the latest version that disables entity resolution during XML file processing.
Related vulnerabilities
- CVE-2026-8778Critical
The MIPL Grouped Checkout Fields for WooCommerce plugin for WordPress (versions up to and including 1.2.1) is vulnerable to arbitrary file uploads due to missing file type validation in the `mipl_wc_upload_file` function. This allows unauthenticated attackers to upload arbitrary files to the server, potentially enabling remote code execution.
- CVE-2026-82107Critical
IBM DataStage on Cloud Pak for Data 5.4.0.0 contains an improper authentication flaw that allows a remote authenticated attacker to obtain sensitive information and bypass security restrictions.
- CVE-2026-82100Critical
IBM DataStage on Cloud Pak for Data 5.4.0.0 is vulnerable to a path traversal issue that allows a remote authenticated attacker to cause a denial of service.
- CVE-2026-81204Critical
IBM Langflow OSS versions 1.0.0 through 1.11.5 allow a remote attacker to execute arbitrary code due to code injection during graph construction.
- CVE-2026-80424Critical
IBM DataStage on Cloud Pak for Data 5.4.0.0 allows a remote authenticated attacker to create arbitrary files due to path traversal during archive extraction.
- CVE-2026-79724Critical
IBM Langflow OSS versions 1.0.0 through 1.11.5 allow a remote attacker to execute arbitrary OS commands due to improper neutralization of special elements used in an OS command.
- CVE-2026-78573Critical
IBM ContextForge MCP Gateway versions 1.0.0 through 1.0.7 allow a remote attacker to gain administrative access due to the use of default credentials.
- CVE-2026-45764Critical
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a protocol change while processing HTTP/2 traffic could lead to type confusion, causing Suricata to crash and resulting in denial of service.
- CVE-2026-19646Critical
IBM Common Licensing Agent 9.0, 9.0.0.1, 9.0.0.2 and ART 9.0, 9.0.0.1, 9.0.0.2 allow a remote attacker to redirect users to an arbitrary domain due to improper validation of the HTTP Host header.
- CVE-2026-89094Critical
Forgejo before 16.0.4 allows remote code execution via a crafted template repository because template expansion on files in .forgejo/template is mishandled.
Original NVD description (English source)
Docling's METS GBS backend is vulnerable to XML Entity Expansion (XXE) attacks thru 2.61.0. The backend extracts and validates XML files from .tar.gz archives using etree.fromstring() without disabling entity resolution. An attacker can craft a malicious XML file with nested entity definitions (XML Bomb) and package it into a .tar.gz archive. When processed by Docling, the exponential expansion of entities during XML parsing leads to excessive resource consumption, resulting in a denial of service (DoS) condition on the system running the Docling parser.